The bar chart shows the distribution of marks in an English test. We need to find how many students passed the test if the pass mark is 50%.

Probability and StatisticsData InterpretationBar ChartFrequency DistributionStatistics
2025/4/29

1. Problem Description

The bar chart shows the distribution of marks in an English test. We need to find how many students passed the test if the pass mark is 50%.

2. Solution Steps

First, let's read the frequencies for each mark range from the bar chart:
Marks 20: Frequency 20
Marks 35: Frequency 35
Marks 40: Frequency 40
Marks 50: Frequency 45
Marks 65: Frequency 25
Marks 80: Frequency 15
Since the pass mark is 50%, we need to add up the frequencies for the mark ranges 50, 65, and
8

0. Number of students who passed = Frequency at 50 + Frequency at 65 + Frequency at 80

Number of students who passed = 45 + 25 + 15
Number of students who passed = 85

3. Final Answer

The number of students who passed the test is
8

5. So, the answer is B. 85.

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