Data for weekly sales total in a Dubai firm are analysed to give the following quartiles: Q₁ = AED 45,000; Q₂ = AED 52,500; Q₃ = 63,780. Which of the following options represents the correct interpretation of the quartile measure of skewness (qsk) for these figures? A) qsk is positive, indicating a rightward skew B) qsk is positive, indicating a leftward skew C) qsk is negative, indicating a rightward skew D) qsk is negative, indicating a leftward skew

Question

Quizplus · Accepted Answer

The quartile measure of skewness (qsk) is calculated as (Q3 + Q1 - 2*Q2) / (Q3 - Q1). Given the values, if Q3 > Q2 > Q1, and the numerator is positive, it indicates a distribution that is skewed to the right, hence a positive skewness indicating a rightward skew.

Data for Weekly Sales Total in a Dubai Firm Are