The following list shows the starting salaries in thousands

The following list shows the starting salaries, in thousands of dollars, for 11 recent college graduates with business degrees: Calculate the range. Calculate the variance. Calculate the standard deviation.

Solution

Note : Range = max - min i.e (44 - 32)

Variance = Sum of (X-mean)² / n

Stdev = sqrt(Variance)

Hope this helps.

		(X-mean)^2
	36	1.61983471
	32	27.8016529
	40	7.43801653
	35	5.16528926
	32	27.8016529
	41	13.892562
	35	5.16528926
	44	45.2561983
	38	0.52892562
	37	0.07438017
	40	7.43801653
Sum	410	142.181818
Mean	37.27273
Range	12
Variance	12.92562
Stdev	3.595222