Mock test Q5

Rajesh Saha

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Nov 13, 2020, 1:18:01 AM11/13/20

to Discussion forum for Statistics for Data Science I

can anybody could explain Q5 ? Attached what I have done. What's wrong ?

Also, I have assumed x>z . But, it was not clear in the question.

stat1.pdf

pranoy Radhakrishnan

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Nov 13, 2020, 3:16:24 AM11/13/20

to Discussion forum for Statistics for Data Science I, Rajesh Saha

x+z=95

x - z = 15

adding both u will get x =55

Statistics 1 Support 1

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Nov 13, 2020, 4:43:10 AM11/13/20

to Discussion forum for Statistics for Data Science I, pranoy Radhakrishnan, Rajesh Saha

Hi Rajesh,

Why are you arranging them in the order of their frequencies, They themselves have their own order. Maintain that order and then check which one comes in the middle position. That will be your median.

Thanks,

Nitin Jha

Course support team

Rajesh Saha

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Nov 13, 2020, 4:51:37 AM11/13/20

to Discussion forum for Statistics for Data Science I, stats1-...@onlinedegree.iitm.ac.in, pranoy Radhakrishnan, Rajesh Saha

Got it. Thanks Nitin.

sareena sanil

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Nov 13, 2020, 9:20:05 AM11/13/20

to Discussion forum for Statistics for Data Science I, Rajesh Saha, stats1-...@onlinedegree.iitm.ac.in, pranoy Radhakrishnan

can you please explain how to do it

do we have to take cumulative frequency and then mean of n/2 and n+1/2 th observation

250/2 is 125 and 126th observation

corresspons to 4 outcome

so mean of it 4+4/2

and thats how median is 4???

Nitin Kumar Jha

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Nov 13, 2020, 10:16:25 AM11/13/20

to Discussion forum for Statistics for Data Science I, sareena sanil, Rajesh Saha, stats1-...@onlinedegree.iitm.ac.in, pranoy Radhakrishnan

Hi,

Yes Sareena, You are right. Since both 125th and 126th values are the same so, the median will be the same.

Thanks,

Nitin Jha

Course support team

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