Question: Question 2 Rachel set a class test for her students. The test is marked out of 100%. Her students marks are summarized in the table

Question 2

Rachel set a class test for her students. The test is marked out of 100%. Her students marks are summarized in the table below:

Marks (100%)

Number of students

15

1

23

1

35

2

46

4

51

5

55

15

61

25

64

13

67

1

72

3

75

12

78

6

86

1

93

1

  1. Construct an appropriate frequency table and draw a histogram to depict the data above

[10 marks]

  1. Compute the mean

[10 marks]

  1. Calculate the variance and standard deviation

[10 marks]

  1. Calculate the coefficient of variation

[5 marks]

  1. Interpret the distribution in your histogram

[5 marks]

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