Question

ruby collects data on the number of hours it takes her classmates to complete an art project. the histogram shows the data. how many classmates answered rubys question? 28 classmates how many classmates take less than 12 hours? classmates

Explanation:

Step1: Identify the bars for less than 12 hours

The bars for 8 - 10 hours and 10 - 12 hours.

Step2: Find the frequencies of these bars

The frequency for 8 - 10 hours is 2, and for 10 - 12 hours is 7.

Step3: Sum the frequencies

$2 + 7=9$

Answer:

9