Question

is the deviation of a class mark $y _ { i }$ from ‘a’ the assumed mean and $f _ { i }$ is the frequency, if $M _ { g } = x + \frac { 1 } { \sum f _ { i } } \left( \sum f _ { i } d _ { i } \right)$, then x is

• A. Lower limit
• B. Assumed mean
• C. Number of observations
• D. Class size

Answer 1

Answer: (B)

Assumed mean

Answer 2

$M _ { g } = a + \frac { 1 } { \Sigma f _ { i } } \left( \Sigma f _ { i } d _ { i } \right)$ ; ∴ $x = a$ i.e., x = assumed mean.