SOLUTION: The number of bicycles sold monthly was; 25,18,30,18,20,19,30,16,36,24, find the range, variance and standard deviation of the number of bicycles sold monthly?

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Question 1174879: The number of bicycles sold monthly was; 25,18,30,18,20,19,30,16,36,24, find the range, variance and standard deviation of the number of bicycles sold monthly?
Found 2 solutions by ewatrrr, ikleyn:
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!


Hi
Using an Excel Spreadsheet:
	x	m	(x-m)	(x-m)^2	
	16	23.60	-7.60	57.760	sum/6
	18	23.60	-5.60	31.360	
	18	23.60	-5.60	31.360	
	19	23.60	-4.60	21.160	
	20	23.60	-3.60	12.960	
	24	23.60	0.40	0.160	
	25	23.60	1.40	1.960	
	30	23.60	6.40	40.960	
	30	23.60	6.40	40.960	
	36	23.60	12.40	153.760	
sum	236			392	sum
sum/10	23.6 = mean		sum/9	43.560	variance
				6.6	sd

Wish You the Best in your Studies.


Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.

Such calculations are routine, and in the Internet, there are TENS of web-sites with free of charge solvers
to do such routine calcs.


Therefore, a person who really want to develop his (or her) own skills, must do such work on his or her own, using
such calculators.



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