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Draw an ogive of the data

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Reference no: EM133165601

There are 150 students in a class. The distribution if their marks in a mathematics test are as follows 

Class                    frequency

0-9                                3

10-19                            10

20-29                            17

30-39                            x

40-49                            35

50-59                            y

60-69                            18

70-79                            10

80-89                            5

90-99                            2

Required

  1. The value of x given that the median mark is 44.357
  2. The value of y given that the modal is 43.0
  3. Draw an ogive of the data in (a) above

Use the ogive above to estimate 

  1. The 8th decile
  2. The 7-th percale
  3. The lower quartile

Reference no: EM133165601

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