Question

The heights of 1000 students at a local school were recorded and found to be approximated by the normal curve below. Which

answer could represent the mean and standard deviation for these data?

Answer 1

The answer is d because that’s the only right answer

Answer 2

D

Explanation:

The mean will be the very middle of the distribution, which is at 66. So we know that a and c are wrong.

The standard deviation is the distance between those bars, like 70 and 74. 74-70 = 4, so the standard deviation is probably around 4.

That means the answer is D.