Question

The heights of 500 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

option C.

Explanation:

The given graph is the bell shaped graph.

From the graph we can observe that the peak is at 69.

So, the mean of the data is = 69 .

Standard deviation is the deviation of the graph from the mean value.

= 72-69 = 3

Hence, the standard deviation is equal to 3.

So, the correct answer is option C.