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Distribution marks in a mathematics

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Reference no: EM133172319

QUESTION 1

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: EM133172319

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