- A5.25
- B4.33
- C4.80
- D23
Step-by-Step Solution
. Deviations from 52: −7, 0, 8, −4, 0, 3; squares add to 138. Variance , SD . (5.25 divides by 5.)
Answer: C) 4.80
Marks of six students are 45, 52, 60, 48, and 55, and their mean is 52. Find the standard deviation of the six marks (divisor n).
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