Question

Following table, illustrate time x an employee spent in years for a typical company versus his/her hourly pay y in dollars. Find average amount of years employee spent in a company and average hourly pay. Also, find the coefficient of correlation between these quantities.

X (time in years )	3	4	5	10	15	20
Y (hourly salary)	15	17	22	33	37	40

Answer 1

solution

X	Y
3	15	-6.5	-12.33	42.25	152.0289	80.145
4	17	-5.5	-10.33	30.25	106.7089	56.815
5	22	-4.5	-5.33	20.25	28.4089	23.985
10	33	0.5	5.67	0.25	32.1489	2.835
15	37	5.5	9.67	30.25	93.5089	53.185
20	40	10.5	12.67	110.25	160.5289	133.035
57	164	47.5	136.67	2256.25	18678.69	6491.825

averate amount of year = 57/6 = 9.5years

average hourly pay = 164/6 = 27.33 dollar

cofficient of correlation