BUSINESS ADMINISTRATION
BUSINESS MATHEMATICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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3.5
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3.6
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3.7
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3.8
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Detailed explanation-1: -The population variance is the variance of the population. To calculate the population variance, use the formula 2=1NN∑i=1(xi−)2 2 = 1 N ∑ i = 1 N ( x i − ) 2 where N is the size of the population consisting of x1, x2, …
Detailed explanation-2: -To find the variance easily, we need to find the mean of given observations first. Then subtract this mean value from each of the observations and square them. At last, find the mean of the squared terms to get the variance.
Detailed explanation-3: -How do I calculate the variance of four numbers? Follow these steps: Work out the mean (the simple average of the numbers.) Then, for each number, subtract the mean and square the result (the squared difference). Finally, work out the average of those squared differences.
Detailed explanation-4: -Variance(2)=∑(x−¯x)2n=(2−6)2+(4−6)2+(6−6)2+(8−6)2+(10−6)25=(16+4+0+4+16)5=405=8. Q.