Question

Following are the serum calcium levels in 100 normal adults. Find the average serum
calcium level.
Class-boundaries Frequency
7.44-7.99 4
8.00-8.55 3
8.56-9.11 12
9.12-9.67 19
9.68-10.23 21
10.24-10.79 20
10.80-11.35 10
11.36-11.91 8
11.92-12.47 2
12.48-13.03 1

Answer 1

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