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