Question

test 1
score: 4.72/10 answered: 5/10
question 6
based on the frequency distribution above, find the relative frequency for the class with lower class limit 15
relative frequency = %
give your answer as a percent, rounded to one decimal place
question help: video
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Explanation:

Step1: Calculate total number of students

$$\begin{align*} \text{Total}&=8 + 6+2 + 6+6+3\\ &=31 \end{align*}$$

Step2: Calculate relative frequency

Relative frequency formula is \(\text{Relative Frequency}=\frac{\text{Frequency of the class}}{\text{Total frequency}}\times100\%\)

For the class \(15 - 18\) (frequency \(f = 8\)), \(\text{Relative Frequency}=\frac{8}{31}\times100\%\)

$$\begin{align*} \frac{8}{31}\times100\%&=\frac{800}{31}\%\\ &\approx25.8\% \end{align*}$$

Answer:

\(25.8\%\)