Arithmetic Mean
Score
Frequency
Arithmetic Mean
Standard Error of Arithmetic mean -
SE
_{M}
Geometric Mean
Harmonic Mean
Variance with Arithmetic mean
Standard Deviation from arithmetic mean-SD
Standard error of SD-
SE
_{σ}
*
Co-efficient of Variation (
γ
)
*Applicable for sample size more than 25.
SE
_{σ}
=
σ
/ √(2N)