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11 questions from this quiz
To organise data into classes for analysis
When you have more than 20-30 data points
888
Lower+Upper2\frac{\text{Lower} + \text{Upper}}{2}2Lower+Upper
∑fx∑f\frac{\sum fx}{\sum f}∑f∑fx
Frequency of each class
Mid-interval value
The class with the highest frequency
(n+1)÷2(n + 1) ÷ 2(n+1)÷2
Cumulative frequency
Classes only, not exact values
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