Q2 of 141 Page 7

The shirt sizes worn by a group of 200 persons, who bought the shirt from a store, are as follows:

Shirt size:

37

38

39

40

41

42

43

44

Number of persons:

15

25

39

41

36

17

15

12

Find the model shirt size worn by the group.

Shirt size	37	38	39	40	41	42	43	44
No. of persons	15	25	39	41	36	17	15	12

Model shirt size= 40 (Since, it occurs maximum number of times)

The distribution below gives the weight of 30 students in a class. Find the median weight of students:

Weight (in kg):	40-45	45-50	50-55	55-60	60-65	65-70	70-75
No. of students:	2	3	8	6	6	3	2

Find the mode of the following data:

(i) 3, 5, 7, 4, 5, 3, 5, 6, 8, 9, 5, 3, 5, 3, 6, 9, 7, 4

(ii) 3, 3, 7, 4, 5, 3, 5,6, 8, 9, 5, 3, 5, 3, 6, 9, 7, 4

(iii) 15, 8, 26, 25, 24, 15, 18, 20, 24, 15, 19, 15

Find the mode of the following distribution.

(i)

Class-interval:	0-10	10-20	20-30	30-40	40-50	50-60	60-70	70-80
Frequency:	5	8	7	12	28	20	10	10

(ii)

Class-interval:	10-15	15-20	20-25	25-30	30-35	35-40
Frequency:	30	45	75	35	25	15

(iii)

Class-interval:	25-30	30-35	35-40	40-45	45-50	50-60
Frequency:	25	34	50	42	38	14

Compare the modal ages of two groups of students appearing for an entrance test:

Shirt size:	37	38	39	40	41	42	43	44
Number of persons:	15	25	39	41	36	17	15	12

The shirt sizes worn by a group of 200 persons, who bought the shirt from a store, are as follows:Shirt size:3738394041424344Number of persons:1525394136171512Find the model shirt size worn by the group.