Q1 of 141 Page 7

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

(i)

Value(x)	3	4	5	6	7	8	9
Frequency(f)	1	2	5	2	2	1	2

Mode = 5 (Since, it occurs maximum number of times)

(ii)

Value(x)	3	4	5	6	7	8	9
Frequency(f)	5	2	4	2	2	1	2

Mode = 3 (Since, it occurs maximum number of times)

(iii)

Value(x)	3	4	5	6	7	8	9
Frequency(f)	1	4	1	1	2	2	1

Mode = 15 (Since, it occurs maximum number of times)

The following table gives the distribution of the life time of 400 neon lamps:

Find the median life.

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

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.

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

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