The shape of the normal probability distribution is determined by the population standard deviation σ.Small values of σ reduce the height of the curve and increase the spread;large values of σ increase the height of the curve and reduce the spread.

Question

Quizplus · Accepted Answer

The shape of the normal probability distribution is indeed determined by the population standard deviation σ, but the explanation is reversed. Small values of σ increase the height of the curve and reduce the spread, while large values of σ decrease the height of the curve and increase the spread.

The Shape of the Normal Probability Distribution Is Determined by the Population