Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 11

MEDIUM

NRA CET - Graduate Level

IMPORTANT

Earn 100

The mean proportional of the numbers is $6$ and their third proportional is $1296$ , the numbers will be-

50% studentsanswered this correctly

Important Questions on Statistics

EASY

NRA CET - Graduate Level

IMPORTANT

Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 12

If the mean of the numbers

- 5, - 8, x, 1, 12

is

0.6

, what is the value of

x

?

EASY

NRA CET - Graduate Level

IMPORTANT

Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 13

If mean of

7, 3, a

and

8

is

6

, what is the value of

a

?

EASY

NRA CET - Graduate Level

IMPORTANT

Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 14

What is the mean deviation from the mean of

7, 14, 22

and

25

?

EASY

NRA CET - Graduate Level

IMPORTANT

Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 15

The mean of five numbers is $21$ . If the sixth number $33$ is included, what will be the mean of six numbers?

(A) $21$

(B) $22$

(C) $34$

(D) $23$

EASY

NRA CET - Graduate Level

IMPORTANT

Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 16

If the mean and median of all the terms of a table is

5

and

6

respectively. What is the mode of the series?

EASY

NRA CET - Graduate Level

IMPORTANT

Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 17

Standard deviation of

1, 4, 5, 7

and

8

is

2.45

. If

10

is added to each term, what is the new standard deviation?

EASY

NRA CET - Graduate Level

IMPORTANT

Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 18

In a class of

43

students, the height of

20

students is less than

150 cm

and the height of

16

students is more than

160 cm

. The height [in cm] of the remaining seven students is as follows:

152, 154, 155, 155, 155, 158, 158

. Determine the median height of the students.

EASY

NRA CET - Graduate Level

IMPORTANT

Railway Recruitment Board Computer Based Test>Chapter 36 - Statistics>Exercise 16>Q 19

If mean and standard deviation of distribution be $10$ and $8$ respectively, what will be the coefficient of variation of that distribution?