Gr 10 Data Handling 3 - Maths Excellence

Frequency
Frequency
(b) Class interval Frequency (number of clients per mass group)
10 – 19 kg 0
20 – 29 kg 1
30 – 39 kg 3
40 – 49 kg 7
50 – 59 kg 18
60 – 69 kg 31
70 – 79 kg 38
80 – 89 kg 49
90 – 99 kg 13
100 – 109kg 0
(c)
50
40
35
30
25
20
15
10
5
10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89
Masses
90-99 100-109
(d)
50
40
35
30
25
20
15
10
5
44,5
34,5
24,5
14,5
10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89
Masses
. .
.
.
54,5
.
64,5
.
74,5
.
84,5
.
94,5
104,5
90-99 100-109
(e) The histogram shows that the majority of people were in the 80-89
kg group. This group would probably either want to lose body fat
and keep or gain muscle mass. It would be unlikely that this group
would want to gain too much weight or lose too much. It seems that
the health product company should market both products in Gauteng.
The 50-69 kg group will benefit from the Muscle Grow product. The
90-99 kg group will benefit from the Fat Go product.
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10 LC G10 MATHS LWB.indb 23 2008/09/09 12:22:50 PM