Here n=7 Therefore, q3= 3(n+1)/4 th position q3= 3*8/4=3*2=6 th position Now we have to arrange the observations in ascending order..then we see that the observation at the 6th position is 62. Pls let me know if you have any questions...
@@EnjoyMath Ma'am your simple English speaking is so fluent that every one can understand it.I teach children and I think your teaching will help me enhance my mathematical concept and fluency in English.
@@sanjitkumarbiswal155 Thank you so much sir for the encouragement!!Keeps me motivated!! Really nice to know that you too are in teaching profession, my best wishes to you 👍👍👍
@@abdulrehmanjaved-rt8jq it all depends on the type of data we are analysing.... IQR helps us find the outliers in the data, range is also useful, standard deviation is also one of the best measures... But it may not be suitable for small data sets.... So there is not one correct answer to the question that which is the best measure of dispersion... Pls let me know if you have any questions....
@abdulrehmanjaved-rt8jq when u want answer in same unit as the data, standard deviation is best,because in variance the unit is squared ...but standard deviation being square root can become non linear also ...
Suppose we have marks of 100 students and n/4 th data is 20 ,then it means the first 25 percentile of students have got marks lesser than or equal to 20. It tells us how well the students of that grade have performed in comparison to another class. Suppose in another class, n/4 th data is 14, it means the first 25 percentile of students have got marks lesser than or equal to 14...so it gives us a measure of comparison...pls let me know if you have any questions...
@@EnjoyMathquestion about the same ,,,,,,,(n+1)/4,and n/4,,,,,,,so my problem is I don't know what u mean when u say odd and even pls elaborate ......
@@janetkambua5399 n means total number of observations in the given data set. If it is odd,we use one method, if it's Even,we use the other method... Is ur doubt resolved? Pls let me know
Agar decimal number aata hai ....for example if it is 2.5, then you take the mean of 2nd and 3rd terms ..that will be the q1 value.... Pls let me know if you have any questions...
If n is even, as mentioned in the video, the lower quartile or q1= (n/4)th term, and the upper quartile=(3n/4)th term. Pls let me know if you have any questions...
@@universal-dx2gz Agar n= 8 then aapko n/4 and 3n/4 integer milenge, tab koi Problem Nahi hoga. suppose data is 2,4,5,7,10,15 N=6 Q1= N/4 th observation= 6/4= 1.5 So it is midway between 1st and 2nd observation Q1= obs1 + 0.5(obs2-obs1) Q1=2+0.5*(4-2) =2+0.5*2=2+1=3 Q2=n/2 th observation=6/2=3rd obs Q2=5 Q3= 3n/4 th observation = 3*6/4= 4.5 So it is midway between 4th and 5th observation Q3= obs4 + 0.5( obs5-obs4) Q3= 7+0.5(10-7) = 7+0.5*3=8.5 Pls let me know if you have any questions....
In case q1 comes as decimal....for example if it is 2.5, then you take the mean of 2nd and 3rd terms ..that will be the q1 value.... Pls let me know if you have any questions...
For example if the term number is 2.5, then you take the mean of 2nd and 3rd terms ..that will be the q1 value.... Pls let me know if you have any questions...
Hello, it's a really interesting question!! I verified with couple of different data sets, 2 times of range is approximately 2.6 times of IQR....so probably it should be 3 times,pls let me know if you have any questions
Do verify it with a couple of examples .....I got 2.6 that way.... You may be right...but if 2 x range = 2x IQR Then the 2 on both sides of equal sign will get cancelled and we get, Range= IQR, which is usually not the case....
Thank you so much for the appreciation, really happy to be of help 👍👍👍 Saw the videos in your channel, very informative videos on English ,great going 👍👍👏👏👏
Very helpful video and clearly explained 👍👍
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Thanks
Examination is near and you tell me 😢
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Mam in quartile 3 why you take 3x2 = 6 term and why quartile 62 please explain
Here n=7
Therefore, q3= 3(n+1)/4 th position
q3= 3*8/4=3*2=6 th position
Now we have to arrange the observations in ascending order..then we see that the observation at the 6th position is 62.
Pls let me know if you have any questions...
Thank you, ma'am! It was helpful.❤🎉
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Thank you mam
@@RajatVerma-v2c most welcome!! Really happy that you found the video useful!! 😊😊👍👍
It was helpful
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simply superb
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Simply understood..... Thank you.... 🥰
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good and easy
explanation
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Very well explained ma'am🙏
Thank you so much for the appreciation!! Really happy that you found the video useful 👍👍👍👍
@@EnjoyMath Ma'am your simple English speaking is so fluent that every one can understand it.I teach children and I think your teaching will help me enhance my mathematical concept and fluency in English.
@@sanjitkumarbiswal155 Thank you so much sir for the encouragement!!Keeps me motivated!! Really nice to know that you too are in teaching profession, my best wishes to you 👍👍👍
Thanks very well explained
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Awesome explanation
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nice explained mam
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Well explain ❤
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Nice 👍❤
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mam ur voice is very awesome ...i really like it 😘
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So nice..tq mam
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Excellent explanation👍
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you're most welcome maam... keep teaching💗@@EnjoyMath
Thankyou!!!
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thanks!
@@abdulrehmanjaved-rt8jq most welcome.... Really happy that you found the video useful!! 😊😊👍👍
@@EnjoyMath is it the most precise measure of dispersion method?
@@abdulrehmanjaved-rt8jq it all depends on the type of data we are analysing.... IQR helps us find the outliers in the data, range is also useful, standard deviation is also one of the best measures... But it may not be suitable for small data sets.... So there is not one correct answer to the question that which is the best measure of dispersion... Pls let me know if you have any questions....
@@EnjoyMath thank you, also can you answer when we use SD and when we use Variance?
thanks again for help.
@abdulrehmanjaved-rt8jq when u want answer in same unit as the data, standard deviation is best,because in variance the unit is squared ...but standard deviation being square root can become non linear also ...
how to find co efficient
@@naveedahmad9337 which coefficient?
@@EnjoyMath coefficient of quartile deviation
@@naveedahmad9337 coefficient of quartile deviation = (Q3-Q1) /(Q3+Q1)
@@naveedahmad9337 coefficient of quartile deviation = (Q3-Q1) /(Q3+Q1)
when N/4 will be used???
Suppose we have marks of 100 students and n/4 th data is 20 ,then it means the first 25 percentile of students have got marks lesser than or equal to 20. It tells us how well the students of that grade have performed in comparison to another class. Suppose in another class, n/4 th data is 14, it means the first 25 percentile of students have got marks lesser than or equal to 14...so it gives us a measure of comparison...pls let me know if you have any questions...
no no my question is
when we use N/4
and when we will use (N+1)/4 ?
Oh ok ....we use n/4 when n is even,and (n+1)/4 when n is odd..... pls let me know if you have any doubts...
@@EnjoyMathquestion about the same ,,,,,,,(n+1)/4,and n/4,,,,,,,so my problem is I don't know what u mean when u say odd and even pls elaborate ......
@@janetkambua5399 n means total number of observations in the given data set. If it is odd,we use one method, if it's Even,we use the other method... Is ur doubt resolved? Pls let me know
Zikomo mama
@@joelnamabwaza3896 most welcome!! Really glad that you found the video useful!! 😊😊👍👍
Thank you mam
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Mam agar Q1 koi floating term aaya jaise ki 2.5th term to vo kaise find kare ?
Agar decimal number aata hai ....for example if it is 2.5, then you take the mean of 2nd and 3rd terms ..that will be the q1 value....
Pls let me know if you have any questions...
@@EnjoyMath ok. Mam thanks
Welcome 👍👍
what if the series will be even?
If n is even, as mentioned in the video, the lower quartile or q1= (n/4)th term, and the upper quartile=(3n/4)th term.
Pls let me know if you have any questions...
@@EnjoyMath iska ap alg se btaen mera exam 2 din m ,even series kha har step samjhaen k wahan q1 ,q2,q3 kse nikalen
@@universal-dx2gz
Agar n= 8 then aapko n/4 and 3n/4 integer milenge, tab koi Problem Nahi hoga.
suppose data is
2,4,5,7,10,15
N=6
Q1= N/4 th observation= 6/4= 1.5
So it is midway between 1st and 2nd observation
Q1= obs1 + 0.5(obs2-obs1)
Q1=2+0.5*(4-2) =2+0.5*2=2+1=3
Q2=n/2 th observation=6/2=3rd obs
Q2=5
Q3= 3n/4 th observation = 3*6/4= 4.5
So it is midway between 4th and 5th observation
Q3= obs4 + 0.5( obs5-obs4)
Q3= 7+0.5(10-7) = 7+0.5*3=8.5
Pls let me know if you have any questions....
Thank you ma'am ❤❤❤
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Thank you mam, so well explained.
Love youhh❤
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If n value is 10 how will we calculate Q1 by this formula
Q1=1/4×n.it comes in decimal
In case q1 comes as decimal....for example if it is 2.5, then you take the mean of 2nd and 3rd terms ..that will be the q1 value....
Pls let me know if you have any questions...
@@EnjoyMath thank u so much💖
Most welcome!! 👍👍😊😊
if term number obtained is in decimals, then what to do?
For example if the term number is 2.5, then you take the mean of 2nd and 3rd terms ..that will be the q1 value....
Pls let me know if you have any questions...
@@EnjoyMath Thankyou ma'am :)
Most welcome 😊😊
What will be the answer
2 times of range = _____ times of IQR
2
3
4
5
Which option I need to select ??
Hello, it's a really interesting question!! I verified with couple of different data sets, 2 times of range is approximately 2.6 times of IQR....so probably it should be 3 times,pls let me know if you have any questions
@@EnjoyMath are you sure. ??
I think it should be 2 .
Maybe I am wrong
Do verify it with a couple of examples .....I got 2.6 that way....
You may be right...but if
2 x range = 2x IQR
Then the 2 on both sides of equal sign will get cancelled and we get,
Range= IQR, which is usually not the case....
@@EnjoyMath thanks for your reply
@@EnjoyMath when the number the term com whith comma 2,5 what shoud be do ?
Very well explained 👏 👌
Thank you so much for the appreciation, really happy to be of help 👍👍👍
Saw the videos in your channel, very informative videos on English ,great going 👍👍👏👏👏
@@EnjoyMath thank you mam.
Thank You from Bangladesh! Very well explained!
Thank you so much for the wonderful comment!! Really happy to be of help...lots of wishes from India 👍👍👍😊😊