Question

MCQ on Statistics :

1 ) The class mark of the class 90-130 is:

(a) 90

(b) 105

(c) 115

(d) 110

2 ) The range of the data:25, 81, 20, 22, 16, 6, 17,15,12, 30, 32, 10, 91, 8, 11, 20 is

(a) 10

(b) 75

(c) 85

(d) 26

3 ) In a frequency distribution, the mid value of a class is 10 and the
width of the class is 6. The upper limit of the class is:

(a) 6

(b) 7

(c) 10

(d) 13

4 ) The width of each of five continuous classes in a frequency
distribution is 5 and the lower class-limit of the lowest class is 10. The lower class-limit of the highest class is:

(a) 15

(b) 30

(c) 35

(d) 40

5 ) Let m be the mid-point and 1 be the lower class limit of a class in
a continuous frequency distribution. The upper class limit of the

class is:

(a) 2m + l

(b) 2m – l

(c) m – l

(d) m – 2l

6 ) The class marks of a frequency distribution are given as follows:
15, 20, 25, …

The class corresponding to the class mark 15 is:
(a) 12.5 – 17.5

(b) 17.5 – 22.5

(c) 18.5 – 21.5

(d) 19.5 – 20.5

7 ) In the class intervals 10-20, 20-30, the number 20 is included in:

(a) 10-20

(b) 20-30

(c) both the intervals

(d) none of these intervals

8 ) A grouped frequency table with class intervals of equal sizes
using 250-270 (270 not included in this interval) as one of the class
interval is constructed for the following data:

268, 220, 368, 258, 242, 310, 272, 342, 310, 290, 300, 320, 319, 304,402, 318, 406, 292, 354, 278, 210, 240, 330, 316, 406, 215, 258, 236. The frequency of the class 370-390 is:

(a) 0

(b) 1

(c) 3

(d) 5

9 ) A grouped frequency distribution table with classes of equal
sizes using 63-72 (72 included) as one of the class is constructed for
the following data:

30, 32, 45, 54, 74, 78, 108, 112, 66, 76, 88, 40, 14, 20, 15, 35, 44, 66, 75, 84, 95, 96, 102, 110, 88, 74, 112, 14, 34, 44. The number of classes in the distribution will be:

(a) 9

(b) 10

(c) 11

(d) 12

10 ) In an examination, ten students scored the following marks: 60, 58, 90, 51, 47, 81, 70, 95, 87, 99. The range of this data is

(a) 60

(b) 51

(c) 61

(d) 52
11) In a grouped frequency distribution, the class intervals are 1-20, 21-40, 41-60, . . , then the class width is

(a) 10

(b) 10.5

(c) 15

(d) 20

12 ) Class size for the following distribution: 0 – 0.25, 0.25 – 0.50, 0.50 – 0.75 is

(a) 10

(b) 0. 25

(c) 50

(d) 2.5

13 ) For a given data, the difference between the maximum and

minimum observation is known as its

(a) class

(b) class mark

(c) range

(d) class limit

14 ) Which of the following variables are discrete ? 1. Size of shoes, 2. Number of pages in a book, 3. Distance travelled by a train, 4. Time

(a) 1 and 2

(b) 1 and 4

(c) 1 and 3

(d) 2 and 4

15 ) To analyse the election results, the data is collected from a

newspapers. The data thus collected is known as

(a) secondary data

(b) raw data

(c) grouped data

(d) primary data​

Answer 1

Step-by-step explanation:

the class mark of class 90-130

Answer 2

Answer:

the class mark of the class 90-130 is