Home
Class 11
MATHS
Consider the number 1,2,3,4,5,6,7,8,9 an...

Consider the number `1,2,3,4,5,6,7,8,9` and `10`.If 1 is added to each number the variance of the number so obtained is

A

`6.5`

B

`2.87`

C

`3.87`

D

`8.25`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

Cosider the number 1,2,3,4,5,6,7,8,9 and 10.If 1 is added to each number the variance of the number so obtained is

Consider the numbers 1,2,3,4,5,6,7,8,9,10. If 1 is added to each number, the variance of the numbers so obtained is (a) 6.5 (b) 2.87 (c) 3.87 (d) 8.25

Consider the first 10 positve integers .If we multiply each number by -1 and then add 1 to each number,the variance of the number so obtained

The standard deviation for the set of numbers, 1,4,5,7,8 is nearly 2.45. If 10 are added to each number, then the new standard deviation will be

The unit digit of a two-digit number is 6. If 9 is added to the number, then the number obtained is 5//4th of the number itself. Find the sum of the digits

If 3 is subtracted from each of two numbers and their ratio is 1:2 .If 2 is added to each of the two number then their ratio is 6:7 .The numbers are

A football player scored the following number of goals in the 10 matches 1,3,2,5,8,6,1,4,7 and 9. Since, the number of matches is 10 (an even number), therefore Median =(5th "observation"+6th "observation")/2=(8+6)/2=7 Is it the correct answer and why?

Two numbers are in the ratio 3 : 5. If 9 is subtracted from each, the numbers so obtained are in the ratio 12 : 23. If 7 is added to the smaller number and 7 is subtracted from the other number, there they will be in the ratio: