Question Bank: Statistics

21 August, 2024

Question Bank: Statistics

1. The mean of the first 10 multiples of 6 is

(a) 3.3
(b) 33
(c) 34
(d) none of these


2. In the given data if n = 230, I = 40, cf = 76, h = 10, f = 65, then its median is

(a)40
(b)46
(c)47
(d)48


3. For the following frequency distribution:

ClassFrequency
0 – 52
5 – 107
10 – 1518
15 – 2010
20 – 258
25 – 305

If the mode and the median are 12.9 and 14.44 respectively, then the mean is

(a) 15.2
(b) 13
(c) 16
(d) 17

4. Mean of 100 items is 49. It was discovered that three items which should have been 60, 70, 80 were wrongly read as 40, 20, 50 respectively. The correct mean is

(a) 48
(b) 49
(c) 50
(d) 60

5. The wickets taken by a bowler in 10 cricket matches are 2, 6, 4, 5, 0, 3, 1, 3, 2, 3. The mode of the data is

(a)1
(b)2
(c)3
(d)4

6. While computing mean of a grouped data, we assume that the frequencies are

(a)centered at the lower limits of the classes
(b)centered at the upper limits of the classes
(c)centered at the class marks of the classes
(d)evenly distributed over all the classes

7. Mode is the

(a)middle most frequent value
(b)least frequent value
(c)maximum frequent value
(d)none of these

8. The mean of the first 10 natural numbers is

(a) 5
(b) 6
(c) 4.5
(d) 5.5

9. The marks obtained by 9 students in Mathematics are 59, 46, 30, 23, 27, 44, 52, 40 and 29. The median of the data is

(a) 30
(b) 35
(c) 29
(d) 40

10. The median of first 10 prime numbers is

(a)11
(b)12
(c)13
(d)none of these

11. The measure of central tendency which is given by the x-coordinate of the point of intersection of the ‘more than’ ogive and ‘less than’ ogive is –

(a)Mean
(b)Median
(c)Mode
(d)None of these

12. The mean and the median of a distribution are 45.9 and 46 respectively. The mode will be

(a)45
(b)47
(c)48
(d)46.2

13. While computing mean of grouped data, we assume that the frequencies are

(a) evenly distributed over all the classes
(b) centered at the classmarks of the classes
(c) centered at the upper limits of the classes
(d) centered at the lower limits of the classes

14. The age of 18 students of a class is reported below. Their modal age is 10, 17, 14, 10, 11, 12, 12,13, 17, 13, 14, 14, 15, 16, 17, 15, 17, 16

(a)22 years
(b)17 years
(c)14 years
(d)16 years

15. Which of the following can not be determined graphically?

(a)Mean
(b)Median
(c)Mode
(d)None of these

16. Construction of a cumulative frequency table is useful in determining the

(a)mean
(b)median
(c)mode
(d)all of the above

17. The mode of 4, 5, 6, 8, 5, 4, 8, 5, 6, x, 8 is 8. The value of ‘x’ is

(a) 4
(b) 5
(c) 6
(d) 8 Answer

18. In a data, if I = 40, h = 15, f1=7, f0=3, f2=6, then the mode is

(a) 52
(b) 62
(c) 72
(d) none of these