Question

Study the normal curve below, then answer the following question:

What is the standard deviation depicted on the graph?

Answer 1

Answer: 7 (choice A)

Reason

The mean is at the center of the bell curve. It's where the bell curve is at the highest point.

So the mean is 75.

Move one space to the right to get to 82. This is a gap of 7 units because 82-75 = 7. This gap represents 1 standard deviation.

Side note: that chart represents the Empirical Rule