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? classmates

Explanation:

Step1: Identify the frequencies

From the histogram, the frequencies (number of classmates in each interval) are \(2\) (for \(8\) - hour interval), \(4\) (for \(10\) - hour interval), \(6\) (for \(12\) - hour interval), \(8\) (for \(14\) - hour interval), \(6\) (for \(16\) - hour interval).

Step2: Sum the frequencies

$$2 + 4+6 + 8+6$$

$$=(2 + 4)+6 + 8+6$$

$$=6+6 + 8+6$$

$$=(6 + 6)+8+6$$

$$=12+8+6$$

$$=(12 + 8)+6$$

$$=20+6$$

$$=26$$

Answer:

\(26\)