- A22
- B12
- C10
- D30
Step-by-Step Solution
Cumulative frequency up to 30 . (12 is just that class's own frequency; 30 is the grand total.)
Answer: A) 22
Classes 0–10, 10–20, 20–30 and 30–40 have frequencies 3, 7, 12 and 8. What is the cumulative frequency of the class 20–30?
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