#### Statistics English Medium Free Online Test 1 Mark Questions 2020-2021

9th Standard

Reg.No. :
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Maths

Time : 00:10:00 Hrs
Total Marks : 10

Part A

10 x 1 = 10
1. The median of the first 10 whole numbers is

(a)

4

(b)

4.5

(c)

5

(d)

5.5

2. Find the mean of the prime factors of 165.

(a)

5

(b)

11

(c)

13

(d)

55

3. Data available in an unorganized form is called__________data

(a)

Grouped data

(b)

class interval

(c)

mode

(d)

raw data

4. Which one of the following is not a measure of central tendency?

(a)

Mean

(b)

Range

(c)

Median

(d)

Mode

5. A particular observation which occurs maximum number of times in a given data is called is

(a)

Frequency

(b)

range

(c)

mode

(d)

median

6. The algebraic sum of the deviations of a set of n values from their mean is

(a)

0

(b)

n-1

(c)

n

(d)

n+1

7. If the mean of five observations x,x+2,x+4,x+6,x+8, is 11, then the mean of first three observations is

(a)

9

(b)

11

(c)

13

(d)

15

8. The mean of the square of first 11 natural number is

(a)

26

(b)

46

(c)

48

(d)

52

9. The mean of the first 10 whole number is

(a)

4

(b)

4.5

(c)

5

(d)

5.5

10. Find the mean of the prime factors of 165

(a)

5

(b)

11

(c)

13

(d)

55