Which statement is TRUE? Variance becomes zero only when every observation is identical., Variance measures central tendency., Variance is always equal to Standard Deviation., None of these
- Variance becomes zero only when every observation is identical.
- Variance measures central tendency.
- Variance is always equal to Standard Deviation.
- None of these
Explanation
- Variance is zero only when all observations have the same value.
- Variance measures dispersion (spread).
- Variance is calculated from squared deviations from the mean.
- Since squared deviations cannot be negative, variance cannot be negative.
Last verified on 21-08-2026
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