Question

In: Statistics and Probability

Class Interval Frequency (fi) Cumulative Frequency (F) 120-<130 1 1 130-<140 3 4 140-<150 8 12...

Class Interval

Frequency (fi)

Cumulative Frequency (F)

120-<130

1

1

130-<140

3

4

140-<150

8

12

150-<160

5

17

160-<170

3

20

∑fi = 20

  1. For the grouped frequency data set obtained in Question above, calculate and interpret where possible:
  2. a)The mean,                                                                                                                                                            (4)

b)median                                                                                                                                                                   (4)

c)mode                                                                                                                                                                      (4)

d)The interquartile range..                                                                                                                                 (10)

e)The coefficient of variation.                                                                                                                           (7)

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