If in a moderately skewed distribution mean = 30 and median = 28, the empirical mode is approximately: MCQ with Answer and Explanation

Explanation:
The arithmetic mean minimizes the sum of squared deviations.

Explanation:
In exclusive class intervals, the upper limit is not included in the class; observations equal to the upper limit are counted in the next higher class to avoid overlap and ensure mutual exclusivity.

Explanation:
Greek letters denote absence and capital English letters denote presence. So, α means not-A, and B means presence of B.