Cumulative Frequency Curve Question Part 1
A tailor collected the following information for the number of uniforms made for a particular time period before school reopen.
|
Days |
No. of Uniforms |
Cumulative Frequency |
|
1-7 |
16 |
16 |
|
8-14 |
13 |
|
|
15-21 |
37 |
|
|
22-28 |
76 |
|
|
29-35 |
98 |
|
|
36-42 |
70 |
|
|
43-49 |
59 |
|
|
50-56 |
33 |
|
|
57-63 |
6 |
a) Complete the column for the cumulative frequency
b) Using a scale of 1 cm to represent 5 days on the horizontal axis and 1 cm to represent 20 uniforms on the vertical axis, draw a cumulative frequency curve on graph paper.
c) Use the curve to determine;
i) The number of uniforms made in the first 28 days
ii) The number of uniforms made in the last 14 days
iii) The number of days taken before a target of 240 uniforms was reached