Explain what is meant by"Ogive"(1mk)

b) The table below shows a grouped frequency distribution data of birthweight (oz) from 100consecutive deliveries.

Group interval

Frequency

29.5-39.5

5

39.5-49.5

10

49.5-59.5

11

59.5-69.5

19

69.5-79.5

17

79.5-89.5

20

89.5-99.5

12

99.5-109.5

8

Use the above data to

Draw an ogive

Estimate the median

Estimate upper and lower quartiles

Obtain the interquartile range

v)Obtain semi-interquartile range.

c) Calculate the standard deviation of the following data below and hence determine thecoefficient of variation.(12mks)

Class

1-3

3-5

5-7

7-9

9-11

11-13

13-15

frequency

1

9

25

35

17

10

3