Question

Jerry took a sample of 444 employees in his office and observed how many hours they each worked one day. Here is what he found

Answer 1

The standard deviation formula is the following:

`\sigma=\sqrt[]{\frac{\sum ^(\infty)_(n\mathop=0)(x_n-\bar{x})^2}{n-1}}`

Since the value of n is 4, the denominator should be 4-1=3. Therefore, the answer is C) The denominator is incorrect.