Question 1158698: Find the range, standard deviation, and variance
A survey of 10 fast-food restaurant noted the number of calories in a mid-sized hamburger. The following are results
514 507 502 498 496 506 458 478 463 514
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! add them up and divide by 10, the mean is 493.6
The range is high - low or 514-458 or 56
the variance is the average of the squared deviations from the mean
the standard deviation first required taking the squared deviations from the mean and dividing by n, if it is a population, or n-1, if it is a sample, which this is. Then take the square root of that result.
s=20.3
the terms are 20.4^2+13.4^2+8.4^2+4.4^2+2.4^2+12.4^2+35.6^2+15.6^2+30.6^2+20.4^2=412.04, variance
sd is sqrt (412.04)=20.30
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