Table 1.Variable level Data

	Ice Cream Sales vs Temperature
Observation #	Temperature C	Ice Cream Sales
1	14.2	$215
2	16.4	$325
3	11.9	$185
4	15.2	$332
5	18.5	$406
6	22.1	$522
7	19.4	$412
8	25.1	$614
9	23.4	$544
10	18.1	$421

(please use Table 1. to answer the questions)

1. Please calculate the covariance as a measure of the relationship between the two variables of interest (ice cream sales vs. temperature). Please show all your work. Use a table or use Excel.