Question

the data represents the ages of people at a garage sale. how many gaps does this histogram have?

Explanation:

Step1: Identify bins with no data

A gap in a histogram is a bin (or range of bins) with no data (height 0) between two bins with data. Let's list the age bins: 25 - 35, 35 - 45, 45 - 55, 55 - 65, 65 - 75.

• Bin 25 - 35: has data (height 3).
• Bin 35 - 45: no data (height 0) → gap between 25 - 35 and 45 - 55.
• Bin 45 - 55: has data (height 9).
• Bin 55 - 65: no data (height 0) → gap between 45 - 55 and 65 - 75.
• Bin 65 - 75: has data (height 15).

Step2: Count the gaps

We found two intervals (35 - 45 and 55 - 65) with no data between non - zero data bins.

Answer:

2