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Mathematics
Mathematics
Problem
Using the frequency distribution below, calculate the population standard deviation (correct to one decimal place). Class interval (marks): 0–10 | 10–20 | 20–30 Frequency: 3 | 2 | 5 a)
9.2
9.2
9.2
b)
8.0
8.0
8.0
c)
8.7
8.7
8.7
d)
8.2
8.2
8.2
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