

Question

The table shows the age distributions of the members of a club.



Age (years)
10-14
15-19
20-24
25-29
30-34
35-39


Frequency
7
18
25
17
9
4



(a) Calculate, correct to one decimal place, the mean age.
(b) (i) Draw a histogram to illustrate the information.
(ii) Use the histogram to estimate the modal age .
(c) If a member is selected at random, what is the probability that he/she is in the modal class?




The table shows the age distributions of the members of a club.



Age (years)
10-14
15-19
20-24
25-29
30-34
35-39


Frequency
7
18
25
17
9
4



(a) Calculate, correct to one decimal place, the mean age.
(b) (i) Draw a histogram to illustrate the information.
(ii) Use the histogram to estimate the modal age .
(c) If a member is selected at random, what is the probability that he/she is in the modal class?

