Question

In: Statistics and Probability

A social scientist measures the number of minutes (per day) that a small hypothetical population of...

A social scientist measures the number of minutes (per day) that a small hypothetical population of college students spends online.

Student Score Student Score
A 87 F 99
B 75 G 31
C 93 H 87
D 96 I 93
E 58 J 84

(a) What is the range of data in this population?
min

(b) What is the IQR of data in this population?
min

(c) What is the SIQR of data in this population?
min

(d) What is the population variance?


(e) What is the population standard deviation? (Round your answer to two decimal places.)
min

Solutions

Expert Solution

(a)

(b)

IQR = Q3 - Q1 = 93.75 - 70.75 = 23

(c)

SIQR = IQR/2 = 23/2 = 11.5

(d)

Formula for population variance is :

We get :

(e)

population standard deviation :


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