Home
Class 12
MATHS
Covariance (x,y) between x and if sumx=1...

Covariance (x,y) between x and if `sumx=15, sum y=40, sumxy=110, n=5` is

A

22

B

2

C

`-2`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CORRELATION AND REGRESSION

    ML KHANNA|Exercise PROBLEM SET (1) (TRUE AND FALSE)|9 Videos

  • CONCEPTS OF SET THEORY

    ML KHANNA|Exercise Self Assessment Test|13 Videos

  • DEFINITE INTEGRAL

    ML KHANNA|Exercise Miscellaneous Questions (Assertion/Reason)|1 Videos

Similar Questions

Explore conceptually related problems

Find the regression coefficients b_(yx) and b_(xy) between x and y for the data n =8, sum x=36, sumy=48, sumxy=225, sumx^(2)=146, sumy^(2)=324 .

In a blvariate data sum x=30, sumy=400, sumx^(2)=196, sumxy=850 and n=10 . Find the regression coefficient of y on x.

Find cov (X,Y) between x and y for the given data sum x_(i)=sum y_(i)=49, sum x_(i)y_(i)=121, n=8

For observations of pairs (x,y) of the variables x and y, the following results are obtained sumx=100, sumy=70, sumx^(2)=2500, sumy^(2)=2000, sumxy=100 and n =20 . Find the equation of the line of regresion of X and Y. Estimate the value of x if y=4.

Find the value of the covariance between x and y , if the regression coefficient of y on x is 3.75 and sigma_x =2, sigma_y =8

If the covariance between x and y is 30, variance of x is 25 and variance of y is 144, then what is the correlation coefficient?

Find the covariance between x and y for the following data

distance between the lines 5x+3y-7=0 and 15x+9y+14=0