The sample variance for distribution of the means is 9
The average of the squared differences from the Mean is called Variance. Variance is a measure of dispersion, meaning it is a measure of how far a set of numbers is spread out from their average value.
The Standard Deviation is a measure of how spread out numbers are.
Its symbol is σ (the Greek letter sigma)
Its formula is the square root of the Variance
Given: Standard Deviation = 3
Sample size = 36
∴ By formula we get
3 = √(Variance)
∴ 9 = Variance
Thus the sample variance for distribution of the means is 9
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