Question

during one shift, the express lane clerk recorded how many times customers violated the \10 items or less\ rule for his lane. in particular, he recorded how many items over the limit each violator placed on the conveyor belt. this data is summarized in the histogram below. note: the last class actually represents \7 or more items,\ not just 7 items.

what is the frequency of times the limit was exceeded by 2 items?
ans =

Explanation:

Step1: Identify the class for 2 items over

The number of items over 10 is 2. We need to find the class interval that contains 2. The class intervals are: 0.5 - 1.5, 1.5 - 2.5, 2.5 - 3.5, etc. 2 lies in the interval 1.5 - 2.5.

Step2: Find the frequency for the class

Looking at the histogram, the frequency (height of the bar) for the class 1.5 - 2.5 (which corresponds to 2 items over the limit, since 1.5 < 2 ≤ 2.5) is 8.

Answer:

8