Write the empirical formula for mode. Ans. Mode = 3 Median – 2 Mean
What is the median class? Ans. The class where cumulative frequency first exceeds ( N/2 ). Write the empirical formula for mode
Can a distribution have two modes? Ans. Yes → bimodal distribution. – Open-ended classes
Modal class = 20-30 (( f_1 = 15 )) ( L = 20, f_0 = 9, f_2 = 8, h = 10 ) Mode = ( 20 + \frac15 - 92\times15 - 9 - 8 \times 10 = 20 + \frac613 \times 10 ) = ( 20 + 4.615 = 24.615 ) 4. Important Short Answer Questions (as per Sandeep Garg) Q1. When is median preferred over mean? Ans. – Open-ended classes, skewed distribution, ordinal data, presence of extreme values. presence of extreme values.