Answer each question based on the given information, and explain your answer in

Question

Answer each question based on the given information, and explain your answer in each case.
(a) What is the interquartile range in the grade distribution?
(b) Which of the following score bands has the fewest students?
(i) 30 - 50
(ii) 50 - 70
(iii) 70 - 90
(Iv) Cannot be determined
(c) How many students in the sample are in the score band between 50 and 70?

4. The five-number summary below shows the grade distribution of a STAT 200 quiz for a sample of 160 students. 50 70 100 20 30 .50 60 40 80 100

Explanation / Answer

here a) Interquartile range =Q3-Q1 =82-50=32

b)30-50 will have fewest as 50-70 contain 25% while 70-90 containsmore then 25%

c)number of students =160*25% =40

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