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what percentage of students scored before 70-90 points on the exam? Round your answer to the nearest tenth of a percent?

what percentage of students scored before 70-90 points on the exam? Round your answer-example-1
what percentage of students scored before 70-90 points on the exam? Round your answer-example-1
what percentage of students scored before 70-90 points on the exam? Round your answer-example-2
User Ahad
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1 Answer

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We want to find the percentage of students that scored between 70-90 points on the examn. Also, we know that there are a total of 71 students, so we have to count the number of students who got between 70-90 points.

We see them represented on the histogram as the two largest bars, and we obtain:


\begin{gathered} 21\text{ students scored between 70-80 points} \\ 22\text{ students scored between 80-90 points} \end{gathered}

So, the total of students that scored between 70-90 points is 21+22=43.

For finding the percentage, we make the quotient between the number of students with a score of 70-90 and the total of the students in the class.


=(43)/(71)\cdot100=60.6

This means that approximately a 60.6% of the class students scored between 70 and 90 points.

User Abdul Moiz
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