FYI: This question is for a Psychology 226 course, Statistical Methods in Psychology  You are told that the following data represents the weight, in pounds, of 3rd grade students: 67, 81, 59, 77, 72, 70, 69, 62, 54, 60, 58, 69. find the median  find the mean  find the iqr State shape of distribution based on your measures of central tendency

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FYI: This question is for a Psychology 226 course, Statistical Methods in Psychology 

You are told that the following data represents the weight, in pounds, of 3rd grade students: 67,
81, 59, 77, 72, 70, 69, 62, 54, 60, 58, 69.

find the median 

find the mean 

find the iqr

State shape of distribution based on your measures of central tendency

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Note: Since you have posted a question with multiple subparts, we will solve the first three subparts for you. To get the remaining subparts solved, please repost the complete question and mention the subparts to be solved.

You are told that the following data represents the weight, in pounds, of 3rd grade students: 67,
81, 59, 77, 72, 70, 69, 62, 54, 60, 58, 69.

To find the median, we need to arrange the data an ascending order.

54,58,59,60,62,67,69,69,70,72,77,81

Here, N=12.

so, median(Q2) =12(Nth2+(Nth2+1))observation

=12(122+(122+1))observation

=12(6th+7th) observation.

=0.5*(67+69)

=68

 

 

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