# 6.4.4. Representing Statistical Data by the Frequency Curve

The following table shows the bonuses received by 75 factory workers in a certain week. What is the number of workers who received a bonus of less than 50 LE?

 Bonus (pounds) Total Number of Workers 75 20– 30– 40– 50– 60– 70– 10 5 10 15 25 10

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Ghada and Salma recorded the temperatures of 39 cities on a certain summer day. They collected the data forming the following frequency table:

 Temperature (degrees Celsius) Total Number of Cities 39 24– 28– 32– 36– 40– 44– 4 5 8 8 5 9

How many cities have a temperature of 36 degrees or higher?

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The table below shows the frequency distribution of the scores of students in a test. Find the percentage of the number of students whose scores start from 40 marks but do NOT exceed 50 marks.

 The Marks Total The Number of Students 50 25– 30– 35– 40– 45– 50– 55– 7 4 5 13 3 6 12

• A
• B
• C
• D
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The table below represents the daily income of 40 workers in pounds. Find the value of .

 Sets Total Frequency 135– 155– – 195– 215– 15 7 6 8 4 40

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