The covariance between x and y is 10. the standard, Ask an Expert

Statistics

1. Find out the the unit of measurement of variance for the following data?

$110	$200	$190	$175
$120	$120	$190	$100
$180	$100	$170	$145
$95	$185	$100	$210
$135	$195	$240	$120

a. Dollars

b. Dollars squared

c. The variance doesn't have a unit of measurement.

d. Cannot say

2. The covariance between X and Y is 10. The standard deviation of X is 2. The standard deviation of Y is 5. Find out the correlation coefficient between X and Y?

a. 25

b. 0.25

c. 1

d. 0

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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