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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