so is local control basically a special type of blocking, in such a way that the experimental units within the blocks are as homogeneous as possible while the blocks themselves are as heterogeneous as possible? Please help. Also when blocking or local control is done, are treatments replicated only within each block. as in one treatment is replicated in one block, and another treatment is replicated in another block?
No, local control is not always blocking. Blocking is done to control or calculate the effect of an unwanted factor which has a potentially major impact on the response variable. For blocking, you can check this video th-cam.com/video/IdMCiqLtACM/w-d-xo.html All treatments are applied in every block. Hope above video helps.
If you are voluntary, first, I would like to introduce my self. My name is Halid Awoke from Africa particularly, in Ethiopia. My profession is lecturer at one of Ethiopian Universities of higher education specifically, at Jinka University. I have taught for five years as a lecturer by delivering different courses for students but now I am teaching Research Method course for 4th year students from College of Agriculture and Natural Resource Department of Natural resource Management . Having saying this, finally, I would like to ask one thing, if you are voluntary please send to me some teaching materials regarding to Experimental Designs and analysis with their calculation examples specially, CRD, RCBD, LSD and Factorial Design in word or pdf files if you have and if you can then I am waiting you starting from this time. All the best. Thank you very much.
Thank you dear colleague for your feedback. Here is a link that would be helpful in understanding experimental designs www.fao.org/3/x6831e/X6831E07.htm#8062 And sorry for the late reply.
There is no hard and fast rule for keeping the number odd. But in certain cases, keeping the odd number of replicates might help in finding out more precise mean and median.
For example we have lab mice and we want to test different doses of drugs (e.g. 50mg, 100mg and a control). So we have 3 groups (3 treatments). Suppose we have 30 mice. 10 mice receiving 50mg treatment 10 mice receiving 100mg treatment 10 mice receiving no drug, i.e. control Now we see these principles one by one. Randomization: Which mouse will receive which treatment? ... they will be randomly picked up and tagged with group name (i.e. 50mg or 100mg or control). Replication: You have 3 treatments and 30 mice which means each treatment can be replicated 10 times (10 mice receiving 50mg, 10 mice receiving 100mg and 10 mice as control). This is replication and all these mice will be randomly picked up from the batch of 30 mice. Local control: Food, air oxygen and other environmental factors may affect the results. So measures should be taken to control these factors, e.g. by giving same type of food to every mouse, growing them in same lab, same environment etc. Hope this answers your question.
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very useful. thank you
Glad it was helpful!
You made it so easy, thanks.
Glad it helped!
Great lecture
Thanks!
I am so very interested by your lecture so that I would like to say keep up it continue by this manner.
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Keep it up
Many thanks
This topic has always been so difficult for me but you just made it so simple, I think I like it now
I'm so glad!
@@benishalikindly share your email or other platform so that I can discuss few things with you if you got some free time. I will be thankful to you.
This is great Benish ....I think I love this unit more now....Thank you so much.
Glad you like it!
Complex subject made simple, I've learnt a lot, thanks a lot for the lecture. Hoping to get more from you madam
Glad to hear that!
These are the questions I kept seeing on my test but not in the book I was studying
Hope it was helpful!
I am agronomist, madam, you made me a researcher, thanks for your help.
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Best explanation
Thank you!
Glad you think so!
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Glad it was helpful!
It is so helpful madam. Thank you so much for this video!
Thanks
so is local control basically a special type of blocking, in such a way that the experimental units within the blocks are as homogeneous as possible while the blocks themselves are as heterogeneous as possible? Please help.
Also when blocking or local control is done, are treatments replicated only within each block. as in one treatment is replicated in one block, and another treatment is replicated in another block?
No, local control is not always blocking. Blocking is done to control or calculate the effect of an unwanted factor which has a potentially major impact on the response variable.
For blocking, you can check this video
th-cam.com/video/IdMCiqLtACM/w-d-xo.html
All treatments are applied in every block. Hope above video helps.
If you are voluntary, first, I would like to introduce my self. My name is Halid Awoke from Africa particularly, in Ethiopia. My profession is lecturer at one of Ethiopian Universities of higher education specifically, at Jinka University. I have taught for five years as a lecturer by delivering different courses for students but now I am teaching Research Method course for 4th year students from College of Agriculture and Natural Resource Department of Natural resource Management . Having saying this, finally, I would like to ask one thing, if you are voluntary please send to me some teaching materials regarding to Experimental Designs and analysis with their calculation examples specially, CRD, RCBD, LSD and Factorial Design in word or pdf files if you have and if you can then I am waiting you starting from this time.
All the best.
Thank you very much.
Thank you dear colleague for your feedback. Here is a link that would be helpful in understanding experimental designs www.fao.org/3/x6831e/X6831E07.htm#8062
And sorry for the late reply.
Why is there a need to have odd number of replicates for an experimental research?
There is no hard and fast rule for keeping the number odd. But in certain cases, keeping the odd number of replicates might help in finding out more precise mean and median.
Thanks mam✨️
You're welcome :)
Hi dear beenish. I am very confused about my experimental design. How can I apporch you to asses your suggestions. Thank you
Please post the research problem in comments. May be I can help!
is blocking and local control the same thing?
Not exactly the same.
Mam can you give me a scenario that applies of each Principles?
Please
For example we have lab mice and we want to test different doses of drugs (e.g. 50mg, 100mg and a control). So we have 3 groups (3 treatments). Suppose we have 30 mice.
10 mice receiving 50mg treatment
10 mice receiving 100mg treatment
10 mice receiving no drug, i.e. control
Now we see these principles one by one.
Randomization:
Which mouse will receive which treatment? ... they will be randomly picked up and tagged with group name (i.e. 50mg or 100mg or control).
Replication:
You have 3 treatments and 30 mice which means each treatment can be replicated 10 times (10 mice receiving 50mg, 10 mice receiving 100mg and 10 mice as control). This is replication and all these mice will be randomly picked up from the batch of 30 mice.
Local control:
Food, air oxygen and other environmental factors may affect the results. So measures should be taken to control these factors, e.g. by giving same type of food to every mouse, growing them in same lab, same environment etc.
Hope this answers your question.
Madam, you taught well. Can you please share the slides?
I am sorry that won't be possible.
@@benishali Okay
Mam plz uplod video on factorial expt and confounding plz
I will try.