SOLUTION: Determine the population mean, variance, and standard deviation for the set of data. (For variance, round your answer to four decimal places. For standard deviation and mean, round

Question 1082870: Determine the population mean, variance, and standard deviation for the set of data. (For variance, round your answer to four decimal places. For standard deviation and mean, round your answer to two decimal places.)
1.3, 1.5, 1.7, 1.8
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Add them (6.3)
divide by the number of them (4)=1.575. That is the mean
variance is the sum of the squared deviations divided by the number of them minus 1 (3)
.275^2+.075^2+.125^2+.225^2=0.1475
Divide by 3=0.04917. That is the variance
Take the sqrt=0.2217, which is the sd
Calculators will give the sd and that can be squared to get the variance.
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