Harmonic mean is undefined if: MCQ with Answer and Explanation

Explanation:
Product = 1×2×4×8×16 = 1024. 1024^(1/5) = 4 (since 4^5=1024).

Explanation:
In a histogram, the mode corresponds to the highest bar (modal class); for grouped data, the exact mode can be interpolated within this class using the histogram's geometry.

Explanation:
Qualitative classification groups data according to attributes or characteristics that cannot be measured numerically, such as literacy status, religion, or occupation type.