Answer to Question #307770 in Statistics and Probability for Zack

Question

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

i)       The value of x given that the median mark is 44.357        (2marks)

ii)     The value of y given that the modal is 43.0                      (2marks)

iii)   Draw an ogive of the data in (a) above                        (3 marks)                    

Answer 1

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