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Maths FROM 2
Chap11: elementary statistics
HistogramsA histogram is a diagram which is used to represent information on a frequency distribution.
Ex: the height in (cm) of 100 girls in the same year at a school are found. The results are as follow
|
Height (x) |
Tally |
Frequency |
|
8 |
II |
2 |
|
9 |
IIII |
4 |
|
10 |
IIII |
4 |
|
11 |
IIII |
4 |
|
12 |
IIII |
4 |
|
13 |
II |
2 |
|
14 |
I |
1 |
|
15 |
IIII |
5 |
|
16 |
IIII II |
7 |
|
Height (cm) |
Frequency |
|
140 |
2 |
|
145 |
6 |
|
150 |
8 |
|
155 |
9 |
|
160 |
10 |
|
165 |
15 |
|
170 |
17 |
|
175 |
24 |
|
180 |
5 |
|
185 |
2 |
|
190 |
2 |
From the above table, draw histogram the data
par Claude Foumtum