Question

Prepare the frequency distribution table for the given set of scores: 39, 16, 30, 37, 53, 15, 16, 60, 58, 26, 28, 19, 20, 12, 14, 24, 59, 21, 57, 38, 25, 36, 34, 15, 25, 41, 52, 45, 60, 63, 18, 26, 43, 36, 18, 27, 59, 63, 46, 48, 25, 33, 46, 27, 46, 42, 48, 35, 64, 24. Take class intervals as (10-20), (20-30), ... and answer the following: (i) What does the frequency corresponding to the third class interval mean? (ii) What is the size of each class interval? Find the midpoint of the class interval 30-40. (iii) What is the range of the given set of scores?

Answer 1

From the data given ,

i ) Frequency corresponding to third

class interval ( 30-40 ) = 10

ii ) Class size = 10

iii )Mid point of the class interval 30 - 40

= ( 30 + 40 )/2

= 70/2

= 35

iv )

minimum score = 12 ,

maximum score = 64 ,

Range = maximum score - minimum score

= 64 - 12

= 52

••••••

Answer 2

.52 is the answer .mmmmmmmmmmmm