Question

The frequency table shows the number of students in each club out of a random sample of 85 students at the school. Frequency table of club membership - left column Club, right column Number of members. Chess 11, photography 14, book 9, science 10, French 8, glee 13. What percent of the entire population of students at the school would you expect to be in Science Club? 10% 12% 17% 15%

Answer 1

You are given the following frequency table:

$\begin{array}{ccc}\text{Club} & | & \text{Number of members} \\ \text{Chess}&|&11\\\text{Photography}&|&14\\\text{Book}&|&9\\\text{Science}&|&10\\\text{French}&|&8\\\text{Glee}&|&13\end{array}$

From the table 10 students from 85 students at the school are members of SScience club, then

85 students - 100%

10 students - x%.

Write a proportion:

$\dfrac{85}{10}=\dfrac{100}{x}\Rightarrow x=\dfrac{10\cdot 100}{85}\approx 12\%$

Answer: option B, 12%