Home
Class 11
MATHS
For two data sets, each of size 5, the v...

For two data sets, each of size 5, the variances are given to be 4 and 5 and the corresponding means are given to be 2 and 4, respectively. The variance of the combined data set is (1) `(11)/2` (2) 2 (3) `(13)/2` (4) `5/2`

A

`5/2`

B

`11/2`

C

6

D

`13/2`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    MODERN PUBLICATION|Exercise Chapter Test|7 Videos

  • STATISTICS

    MODERN PUBLICATION|Exercise Check your understanding|10 Videos

  • SETS

    MODERN PUBLICATION|Exercise CHAPTER TEST 1|12 Videos

  • STRAIGHT LINES

    MODERN PUBLICATION|Exercise Chapter test|12 Videos

Similar Questions

Explore conceptually related problems

For two data sets, each with size 5, the variances are given to be 3 and 4 and the corresponding means are given 2 and 4, respectively. The variance of the combined data set is

Two data sets each of size 10 has the variance as 4 and k and the corresponding means as 2 and 4 respectively. If the variance of the combined data set is 5.5, then the value of k is equal to

The variance sigma^(2) of the data

Variance of the data 2,4,6,8,10 is

Variance of the data 2,4,6,8,10 is

The mean and the variance of a binomial distribution are 4 and 2 respectively. Then, the probability of 2 successes is

If 2 data sets having 10 and 20 observation have coefficients of variation 50 and 60 respectively and arithmetic means 30 and 25 respectively, then the combined variance of those 30 observation is

The mean and the variance of a binomial distribution are 4 and 2 respectively.then, the probabitly of 2 , successes is

Mean and variance of a binomial distribution are 4 and 2 respectively . Then probability of 3 successes is