Frequency, Frequency Tables, and Levels of Measurement · Try It 1

shows the amount, in inches, of annual rainfall in a sample of towns.

$$\begin{array}{cccc}\text{Rainfall (Inches)}& \text{Frequency}& \text{Relative Frequency}& \text{Cumulative Relative Frequency}\\ \text{2.95–4.97}& \text{6}& \frac{6}{50}\text{ =.12}& \text{.12}\\ \text{4.97–6.99}& \text{7}& \frac{7}{50}\text{ =.14}& \text{.12 +.14 =.26}\\ \text{6.99–9.01}& \text{15}& \frac{15}{50}\text{ =.30}& \text{.26 +.30 =.56}\\ \text{9.01–11.03}& \text{8}& \frac{8}{50}\text{ =.16}& \text{.56 +.16 =.72}\\ \text{11.03–13.05}& \text{9}& \frac{9}{50}\text{ =.18}& \text{.72 +.18 =.90}\\ \text{13.05–15.07}& \text{5}& \frac{5}{50}\text{ =.10}& \text{.90 +.10 = 1.00}\\ & \text{Total = 50}& \text{Total = 1.00}& \end{array}$$
From, find the percentage of rainfall that is less than 9.01 inches.

OpenStax, Statistics · §1.3 Frequency, Frequency Tables, and Levels of Measurement · Try It 1