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Let’s ask this in a nicer way:
Does foot size increase with height and do boys have bigger feet than girls?
Let’s use some data from Census at School to find out.
On page 2, there is a table using data on height, foot size and gender. These data were taken from 60 randomly selected student records in the UK database.
- Draw a scatter graph with the X axis representing foot length and the Y axis showing height. (X scale from 14 to 30 , Y scale from 110 to 190)
- Mark boys and girls with different symbols or in different colours on your graph.
- Don’t forget to give a title to the graph and label the axes and add a key.
After admiring your handiwork try looking carefully at your graph and write a few conclusions.
- Can you identify any students who have particularly big or small feet for their height?
- Are there differences between boys and girls? What are they?
- Do the taller students have bigger feet?
- Is there positive, negative or no correlation?
- Can you draw in a line of best fit?
Think of some questions of your own to ask as well.
Pupil no. | Gender | Height | Foot |
---|---|---|---|
cm | |||
1 | F | 160 | 25 |
2 | M | 111 | 15 |
3 | F | 160 | 23 |
4 | F | 152 | 23.5 |
5 | F | 146 | 24 |
6 | F | 157 | 24 |
7 | M | 136 | 21 |
8 | F | 143 | 23 |
9 | M | 147 | 20 |
10 | M | 133 | 20 |
11 | F | 153 | 25 |
12 | M | 148 | 23 |
13 | M | 125 | 20 |
14 | F | 150 | 20 |
15 | M | 183 | 28 |
16 | M | 184 | 25 |
17 | M | 125 | 18 |
18 | F | 140 | 20 |
19 | M | 170 | 27.5 |
20 | F | 168 | 25.5 |
21 | M | 131 | 23 |
22 | M | 149 | 23 |
23 | F | 156 | 21 |
24 | F | 130 | 19.5 |
25 | F | 142 | 22 |
26 | F | 159 | 24 |
27 | F | 145 | 21.5 |
28 | F | 162 | 25 |
29 | M | 149 | 22 |
30 | F | 169 | 24.5 |
31 | M | 126 | 20 |
32 | M | 150 | 24 |
33 | M | 170 | 26 |
34 | F | 141 | 21 |
35 | F | 123 | 20 |
36 | F | 122 | 19 |
37 | M | 125 | 20 |
38 | F | 133 | 20 |
39 | M | 165 | 25 |
40 | F | 131 | 20 |
41 | F | 134 | 17 |
42 | M | 158 | 25 |
43 | F | 170 | 25 |
44 | F | 125 | 15 |
45 | F | 135 | 21 |
46 | F | 138 | 19 |
47 | M | 134 | 20.5 |
48 | M | 145 | 22 |
49 | F | 171 | 25 |
50 | F | 181 | 24 |
51 | F | 139 | 19.5 |
52 | M | 147 | 25 |
53 | M | 134 | 19 |
54 | F | 164 | 24 |
55 | M | 127 | 19.5 |
56 | F | 138 | 23 |
57 | M | 180 | 24 |
58 | M | 159 | 26 |
59 | F | 151 | 23.5 |
60 | M | 165 | 29 |
How does this data compare with your own class data?
Reproduced with permission from CensusAtSchool – U.K.