An instructor here, I used these videos as a learning resource to help compliment their learning process. It is really helpful to have a summarized content of all the discussions we had on the topic. Thank you!
So glad that the videos are helpful. I created my original videos so I could teach a class with them, so maybe that can help you along, too. Wish you the best learning in stats
Amazing! I'm working on my EdD in leadership, but needed to take a beginning statistics course because it's been more than six years since I took statistics. How in the world can I understand advanced statistics if i don't know the basics? These videos have been incredibly helpful. Thank you for your methodical knowledge, concise discourse, and true professionalism in a subject matter that can be quite daunting!
Simply great videos, so easy to grasp! I'm doing methods course in Educational Research and these short videos have finally freed me from the state of confusion I've been in during the lectures at university. Very helpful and I realized I really like working in SPSS!
The best thus far. way better than my lecturer. can u take over his place? lollol. He taught and half of the class couldn't understand. We are gonna sit for an exam and you did an amazing job by helping me to get this on my head. Thanks, Dr.
Glad that the videos were helpful. Please recommend them to your classmates, as well. Best of luck in your class and don't be too hard on your instructor...we all have to learn somewhere and teaching is not as easy as it may seem. Cheers!
@@ResearchByDesign I wish we could take easy on our lecturer... theres a difference between a passionate lecturer and "I dont care, but just feeling in the quota coz I have a privilege" lecturer.... whenever we asks, He says "Ask your friends" and speaks the native language when the others dont understand. Lol.... Too scared to even complain🤷♀️, scared that our marks will be jeopardized and they whole system turn against us. Anyway thank you
If you have two categories variables (Gender and Voting status) you would use cross tabs (perhaps with chi square) to separate 2 x 2 for male/female vs. voted/did not vote; select row percentages option to get the frequencies. Good luck.
I just can't figure this out if you have more than like 2 variables...my assignment has like 8 that we're supposed to run a t test with and I can't get it to run.
Hi guys. Is there a video on how too recode variables for example I need too find out if the gender of male and female are meeting a combination of reccomemded Aerobic amd Muscle strengthen guidelines
I was sure I had a recoding video, but it seems not. Your best bet is the Transform > Recode into different variables command. You create an Output variable based on ranges of scores. You may be looking for the Transform > Create New Variable command if you want to combine two (or more) variables into one, such as you would do with a Crosstabulation
normality test for paired samples, many colleges place pretest and posttest values and giving to sign values while others place differences between pretest and posttest giving one sign value, what is the true???
Thanks Prof, your videos really helped me here in Kenya, where there are few such cool instructors... Where can I get the Rstat institute videos that give everything in detail?
I think that if you go to the main channel (now "Research by Design"), you will find playlists and videos specific to every part of an introductory statistics course. Thanks for the question. th-cam.com/users/ResearchByDesign
Say I'm doing research on the correlation between study time and academic achievement. And I am using three different classes and the time used to study each of those classes. What kind of t-test would I have to use?
thank you for this great video. Would you mind help me with this question regarding the Independent samples t-test which has driven me nuts recently? Let's say I want to compare the income (IC) between male and female; and the component "income" consists of various types of income (IC1, IC2, IC3). Is it possible to compare IC with cumulated means of IC1, IC2 and IC3 (using independent t-test)? The video only mentions how to compare means of each items. Thank you very much.
Yes, absolutely. Create a sub scale by getting the mean of IC1 to IC3, then using that single mean as the DV in your t test. Alternatively, you can do a mixed ANOVA where you consider each IC variable separately for both categories of gender. Good luck
Hello Professor! Thank you for providing such easy to grasp content on both statistics and SPSS! There's one little doubt I had in this particular lecture and that being how come do we have df (degrees of freedom) 8 here instead of 9? Since we do not have "height" and "weight" data for two respondents, that leaves us with 10 complete pairs, and as told before, df in this case should be 10 - 1 = 9. Or is it because we independently calculated the df here, like 5 pair of data points for Men (so df = 4), and 5 pair of data points for women (df = 4) ?
Check the link to the Google Drive in each of my videos. Look for the Effect Size Calculator for t Tests. Right click to download. The tables are on the Excel tabs.
There is an effect size calculator in the course Google Drive (see the link in the description). It has a t table. Let me see about posting a copy of the one that I refer to in the video, as well. Thanks for taking the time to comment.
The critical value comes from Student's t Table. You can search for one online, they are in most every stats book, I included one in the Effect Size Calculator for t-tests spreadsheet...see link to Google drive in the video description.
If sample size is 50-50 for 2 groups each and we want to measure 2 groups of male, their age, their education etc. then which test can be applied? Plz tell
Balanced samples are great. If age is numeric/scale, then you could use an independent samples t test. Education will be ordinal, so I would use a chi-square test for that. Your two groups are the IV, age or education is the DV. Good luck
We statisticians often evoke that kind of response from women...there is something about a guy who knows how to calculate t tests and use proper APA style. :o) Thanks for the comment...made me smile.
Hi! Thank you for your amazingly helpful videos. I have a question. Can the independent t-test be run with one-tailed p value? If yes, how? If not, why? Thank you so much!
@@ResearchByDesign Thank you so much! Your videos are hugely helpful!. In your video, you change the CI from 95% to 90%. Would it still be okay if I kept mine to 95%?
If you measure the same sample twice (i.e. before and after design) then you have a repeated measures (paired samples/within subjects) t-test. The independent t test is for two groups measured once.
Good question...I think it is a legacy of SPSS, no critical values. In their defense, if you have the accurate p value, then you really do not need the t_crit for interpretation.
I still don't get this. Think I'm to tired, but I was wondering, we are doing an analysis and the have the question we asked on SPSS and made variables out of them. So example: Did you experienced you intro at work as positiv? The answer they could choose from were ''a lot* little and so on. We remade the variable answers to '' negativ and positive''' in SPSS because the percentage of people who answered was low. Can we do. t-test on the negativ and positive variables or did I just not understand why we need to do a t-test? Im so tired of this right now haha
Well, it is always a more enjoyable experience to do stats when your brain is fresh. Trying to learn when you are tired is tough. That said, I am having a little trouble following your research design. I have a few other videos about setting up an independent t test that might help clarify what you need in order to do the test. Start with this one: th-cam.com/video/0jGojVxrFv0/w-d-xo.html
That was the easiest tutorial for T-test but one thing I couldn't understand that how to choose the row "Equal Variance assumed" or "Equal variance not assumed". Why did you stick to the first row? what was the reason? Thanks
Thanks for the question. It has to do with Levene's test for equality of variances. Here is a video that explains it in more detail. The part that you want is around the 8 minute mark. th-cam.com/video/6eqm7zdPc3U/w-d-xo.html
An instructor here, I used these videos as a learning resource to help compliment their learning process. It is really helpful to have a summarized content of all the discussions we had on the topic. Thank you!
You sir are my savior. I have an exam on stat theory and SPSS coming up and I can't tell you how much your videos have helped me!
这才是一个不讲废话，不罗里吧嗦，直击主题，绝世好老师
I'm working on my graduate thesis right now and need SPSS for analysis. This has been incredibly helpful. Thank you!
This is a lifesaver. My grad teacher doesn't even bother teaching us how to use spss or even the class for that matter. Thank you for this.
So glad that the videos are helpful. I created my original videos so I could teach a class with them, so maybe that can help you along, too. Wish you the best learning in stats
This helped me too because of that reason too ! Thanks for the easy explanation
Seriously stil loving your channel. You helped me pass my statistics exam back in 2020 and now again during my thesis! Cheers From the Netherlands.
After six years ,you are still helpful sir.. tomorrow i have a practical and i want to do my best....thanks for sharing 😊
you are a miracle to whoever likes statistics Dr. Daniel
Thank you so much for the comment!
Amazing! I'm working on my EdD in leadership, but needed to take a beginning statistics course because it's been more than six years since I took statistics. How in the world can I understand advanced statistics if i don't know the basics? These videos have been incredibly helpful. Thank you for your methodical knowledge, concise discourse, and true professionalism in a subject matter that can be quite daunting!
he made these concepts really clear for a beginner. respect
Simply great videos, so easy to grasp! I'm doing methods course in Educational Research and these short videos have finally freed me from the state of confusion I've been in during the lectures at university. Very helpful and I realized I really like working in SPSS!
Your contribution to my understanding of SPSS, somebody with NO stats background. Thanks
Glad to hear that! Wish you the best with your studies.
I am watching this video now, and really it's so simple and so much informative and easy
2000 word Biosciences report due tomorrow, thank you for this video it helped SO MUCH!!!😀😀
I can't tell if you should be a professor or a door salesman. You would be well suited for both! :p
This is the best source to learn Statistics.
Thank you so much for the comment. Glad that you are enjoying the videos!
easy and accurate way of teaching and now i understand after watching many video of others before this video...... thank you so much.
Thank you so much for helping me understand how to use SPSS and interpret the output. SO HELPFUL.
I'm so glad!
One of the most easy to understand video. Hats off teacher!!
You just saved my graduation project, thank you.
Glad I could help! That is wonderful to hear!
Absolutely excellent videos. I'm learning SPSS & your videos really help me out to understand all statistical stuff. Thumbs up👍👍
Thank you so much for the comment. Glad that the videos are helpful!
thank you sir big respect to you!!!! your explanation is way better than my college professors
Absolutely excellent: clear, logical, understandable, interesting!
Thank you for explaining this slowly and clearly. My lecturers explanation was hopelessly convoluted compared to this video. You saved me o.o
Glad it was helpful!
Absolutely great explanation, very understandable and helpful! Thank you!
After a million replays I finally understand, thank you :>
Really admirable way 2 teach
Love 2 learn SPSS
Excellent...glad that the videos are helping you learn. Thanks for the comment.
The best thus far. way better than my lecturer. can u take over his place? lollol. He taught and half of the class couldn't understand. We are gonna sit for an exam and you did an amazing job by helping me to get this on my head. Thanks, Dr.
Glad that the videos were helpful. Please recommend them to your classmates, as well. Best of luck in your class and don't be too hard on your instructor...we all have to learn somewhere and teaching is not as easy as it may seem. Cheers!
@@ResearchByDesign I wish we could take easy on our lecturer... theres a difference between a passionate lecturer and "I dont care, but just feeling in the quota coz I have a privilege" lecturer.... whenever we asks, He says "Ask your friends" and speaks the native language when the others dont understand. Lol....
Too scared to even complain🤷♀️, scared that our marks will be jeopardized and they whole system turn against us.
Anyway thank you
oh my god THANK YOU SO MUCH. Was SO confused about my dissertation and your video made me understand the test so well! thank you!!
You're very welcome! That is great to hear
This is beautifully clear! Thank you very much.
Wonderful video i have learned clearly to analyze the data on SPSS, thank you so much and keep going sir.
You're most welcome. Wish you the best in your class
really easy to understand...never gets boring
this is a life saver, i've watched the first video up to this and everything was so easy to grasp.
THANK YOU!!! I had been so lost, until today!
Glad I could help!
Thanks for posting this! It helped me a lot with my assignment and refreshing my SPSS knowledge
Great to hear! Thanks for the comment
Just stumbled upon these videos. Thank you for sharing this information. Extremely helpful!!
Glad it was helpful! Hope that you find other videos on the channel that are useful, as well.
Hello sir@research by design
How you took critical value
Absolutely excellent: clear, logical, understandable, interesting! God bless u!!!!!!
Thank you Kindly! Glad they were helpful
if in confidence interval both lower and upper value comes to be negative then will it include zero?
What type of test should I use when I need to compare the susceptibility of the test organisms to the fungal isolates in my study?
He makes it all so simple!
Well, I try to make it simpler...there is still a lot to know. Good luck to you. :o)
your explanations have valid reasons.....
Thanks so much!
Thank you for the videos. They were very informative and also easy to understand
Glad you like them! Thanks for the comment
Thanks Doc.... so much enlightening, I enjoyed all your SPSS videos.....
Hi, Dr Todd Daniel, i loved your videos & learned almost everything. Where can i find your other videos on regression, anova and other tests as well
What if the results for the 3 ways of statistical significance condradict? So for example just one says significant and the other two not significant
Sir, where can I find your videos on effect size
Thank you very much for this video very informative and easy to follow.
How can you determine the mean difference between your two groups
Excellent lecture. Thank you very much for the explanation.
Thank you so much!
Please Is it possible to use the t-test for only categorical variables ? Thanks.
If you have two categories variables (Gender and Voting status) you would use cross tabs (perhaps with chi square) to separate 2 x 2 for male/female vs. voted/did not vote; select row percentages option to get the frequencies. Good luck.
@@ResearchByDesign Thanks a lot
I just can't figure this out if you have more than like 2 variables...my assignment has like 8 that we're supposed to run a t test with and I can't get it to run.
Can we use this test for compare same grouping variable( nominal) with 4 test variables ( scale) at the same time?
Hi guys. Is there a video on how too recode variables for example I need too find out if the gender of male and female are meeting a combination of reccomemded Aerobic amd Muscle strengthen guidelines
I was sure I had a recoding video, but it seems not. Your best bet is the Transform > Recode into different variables command. You create an Output variable based on ranges of scores. You may be looking for the Transform > Create New Variable command if you want to combine two (or more) variables into one, such as you would do with a Crosstabulation
Thank you Sir. It is Very helpful. Keep it up.
Can u please suggest how to compare age groups between two groups in SPSS ( for example Consumers and non consumers)???
Thank you so much for sharing prof. it was very helpful.
Do you have any idea how Amazing is your teaching?!!!!
What a wonderful comment...I am touched, thank you so much. Wonderful to hear that.
normality test for paired samples, many colleges place pretest and posttest values and giving to sign values while others place differences between pretest and posttest giving one sign value, what is the true???
spss made easy.. very interesting and easy lectures.. This one was very helpful.. !!
Thanks Prof, your videos really helped me here in Kenya, where there are few such cool instructors... Where can I get the Rstat institute videos that give everything in detail?
I think that if you go to the main channel (now "Research by Design"), you will find playlists and videos specific to every part of an introductory statistics course. Thanks for the question. th-cam.com/users/ResearchByDesign
@@ResearchByDesign thanks for the clarification
Thanks ,but how about levene's test for equality of variances
No problem...here you go: th-cam.com/video/4mkEZxgxMRA/w-d-xo.html
Thank you very much from Somalia
1:44, "let's get crazy" :D
Amazing tutorial! this is a real time refresher for me, thank you So much
Great to hear!
Thanks for the vivid explanation.
My pleasure! Thank you for taking the time to comment
Accurate and precise. This help me a lot in my report.
Excellent...glad to hear it. Thank you so much for taking the time to comment.
Fantastic Tutorial....Thank You Sir
Thank you so much sir for explaining. You're the best. :)
Say I'm doing research on the correlation between study time and academic achievement. And I am using three different classes and the time used to study each of those classes. What kind of t-test would I have to use?
thank you for this great video. Would you mind help me with this question regarding the Independent samples t-test which has driven me nuts recently?
Let's say I want to compare the income (IC) between male and female; and the component "income" consists of various types of income (IC1, IC2, IC3). Is it possible to compare IC with cumulated means of IC1, IC2 and IC3 (using independent t-test)? The video only mentions how to compare means of each items.
Thank you very much.
Yes, absolutely. Create a sub scale by getting the mean of IC1 to IC3, then using that single mean as the DV in your t test. Alternatively, you can do a mixed ANOVA where you consider each IC variable separately for both categories of gender. Good luck
@@ResearchByDesign that answers my question. Thank you very much.
Great contribution, i love it. it gives me clear understanding.....
Thank you very much.
Thank you. This is really helpful
Glad that it was helpful!
Hello Professor!
Thank you for providing such easy to grasp content on both statistics and SPSS!
There's one little doubt I had in this particular lecture and that being how come do we have df (degrees of freedom) 8 here instead of 9?
Since we do not have "height" and "weight" data for two respondents, that leaves us with 10 complete pairs, and as told before, df in this case should be 10 - 1 = 9.
Or is it because we independently calculated the df here, like 5 pair of data points for Men (so df = 4), and 5 pair of data points for women (df = 4) ?
Easy to understand. Thank you so much.
can somebody tell me where can I get the students t distribution table? please :)
Check the link to the Google Drive in each of my videos. Look for the Effect Size Calculator for t Tests. Right click to download. The tables are on the Excel tabs.
Hi, Dr Todd, where to obtain the Student's Distribution Table for comparing t value?
There is an effect size calculator in the course Google Drive (see the link in the description). It has a t table. Let me see about posting a copy of the one that I refer to in the video, as well. Thanks for taking the time to comment.
you have my respect
Thank you!
Where did you get the critical value from
The critical value comes from Student's t Table. You can search for one online, they are in most every stats book, I included one in the Effect Size Calculator for t-tests spreadsheet...see link to Google drive in the video description.
@@ResearchByDesign Thank you so much!
Wonderful presentation sir.
So nice of you. thank you
It made me to know easily SPSS Thank you
What is i have more than 2 group!???
Just awesome!
A nice educative and simple video.....keep it going.
If sample size is 50-50 for 2 groups each and we want to measure 2 groups of male, their age, their education etc. then which test can be applied? Plz tell
Balanced samples are great. If age is numeric/scale, then you could use an independent samples t test. Education will be ordinal, so I would use a chi-square test for that. Your two groups are the IV, age or education is the DV. Good luck
This might sound weird but I love you...
We statisticians often evoke that kind of response from women...there is something about a guy who knows how to calculate t tests and use proper APA style. :o) Thanks for the comment...made me smile.
Hi! Thank you for your amazingly helpful videos. I have a question. Can the independent t-test be run with one-tailed p value?
If yes, how?
If not, why?
Thank you so much!
Yes you can! Here is a video about a one-sample t test. The technique is the same: th-cam.com/video/UaGMEPaSaFo/w-d-xo.html
@@ResearchByDesign Thank you so much! Your videos are hugely helpful!. In your video, you change the CI from 95% to 90%. Would it still be okay if I kept mine to 95%?
Superb and Interesting lectures on SPSS
does it have to be for when the same sample was measured twice?
If you measure the same sample twice (i.e. before and after design) then you have a repeated measures (paired samples/within subjects) t-test. The independent t test is for two groups measured once.
these videos are so helpful!
Great...glad to hear it! Please keep watching.
Why the t_crit is not displayed by default?
Good question...I think it is a legacy of SPSS, no critical values. In their defense, if you have the accurate p value, then you really do not need the t_crit for interpretation.
You saved me! :D There is a special place for you in heaven :D
Thank you so much for the comment. Very pleased to know that the videos helped.
Excellent elaboration
Many thanks
Awesome lecturer :) Thank you
Amazing. Thank you so much.
what if the degrees of freedom is 293?
Then you have a huge sample size...
@@ResearchByDesign Thanks for your reply! So to find the critical value on the distribution table, should I go with infinity?
I still don't get this. Think I'm to tired, but I was wondering, we are doing an analysis and the have the question we asked on SPSS and made variables out of them. So example: Did you experienced you intro at work as positiv? The answer they could choose from were ''a lot* little and so on. We remade the variable answers to '' negativ and positive''' in SPSS because the percentage of people who answered was low. Can we do. t-test on the negativ and positive variables or did I just not understand why we need to do a t-test? Im so tired of this right now haha
Well, it is always a more enjoyable experience to do stats when your brain is fresh. Trying to learn when you are tired is tough. That said, I am having a little trouble following your research design. I have a few other videos about setting up an independent t test that might help clarify what you need in order to do the test. Start with this one: th-cam.com/video/0jGojVxrFv0/w-d-xo.html
That was the easiest tutorial for T-test but one thing I couldn't understand that how to choose the row "Equal Variance assumed" or "Equal variance not assumed". Why did you stick to the first row? what was the reason? Thanks
Thanks for the question. It has to do with Levene's test for equality of variances. Here is a video that explains it in more detail. The part that you want is around the 8 minute mark. th-cam.com/video/6eqm7zdPc3U/w-d-xo.html
THANK YOU VERY MUCH
THE BEST!! THANK YOU!