Question

How many strings had between 41 and 50 broken lights?

Answer 1

Given:

A histogram showing number of strings against broken lights per string.

To get the number of strings between 41 and 50 broken lights, we look at the bar representing 41-50 number of broken lights on the x-axis and trace it to the number of strings on the y-axis.

This is shown below;

From the above, it can be deduced therefore that the number of strings that had between 41 and 50 broken lights is 7.