Statistics
Coefficient of Skewness
Premium Question
Grade 11
Question:
For a distribution with mean 20, mode 17 and standard deviation 3, Karl Pearson's coefficient of skewness $S_k = \frac{\text{Mean} - \text{Mode}}{\text{S.D.}}$ equals:
(1) 0.5
(2) 1
(3) 1.5
(4) 3
Step-by-Step Solution
Key Concept: Simply substitute the given values of the mean, the mode, and the standard deviation directly into the stated formula for $S_k$.
The detailed step-by-step mathematical proof is available inside the Mathbee app workspace.
Correct Answer: (2)