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tekilochka [14]
3 years ago
7

5. If the covariance between the variables x and y is 18 and the variance

Mathematics
1 answer:
klasskru [66]3 years ago
5 0

Answer:

The coefficient of  correlation=0.5

Step-by-step explanation:

We are given that

Covariance between the variable  x and y=18

Variance of x=16

Variance of y=81

We have to find the coefficient of correlation

We know that

Coefficient of correlation

r=\frac{covariance(x,y)}{\sqrt{variance(x)}\times \sqrt{variance(y)}}

Using the formula

r=\frac{18}{\sqrt{16}\times \sqrt{81}}

r=\frac{18}{4\times 9}

r=0.5

Hence, the coefficient of  correlation=0.5

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