Find the median of the following data:
Class: 0 - 10 10 - 20 20 – 30 30 – 40 40 ‐ 50 Frequency: 15 10 35 50 40
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The cumulative frequency just greater than 25 is 37 and the corresponding class is 40 – 50. Thus, the median class is 40 – 50. ∴ l = 30, h = 10, N = 50, f = 10 and cf = 15. Thus, the median is 40.
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Class Frequency Cumulative Frequency (cf)
20 – 30 7 15
30 – 40 10 25
40 – 50 12 37
50 – 60 8 45
Step-by-step explanation:
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