ST6 · Further applications 1 Spread and standardised scores mind map
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Recall link
Higher: Interpercentile ranges: Name both percentile endpoints and enclosed share.
Higher: Variance and SD: SD = square root of mean squared deviation.
Application 1
Frequency-table SD: Square values before frequency weighting; grouped midpoints give estimates.
Connections
Recall link → Application 1: Frequency-weighted squared values produce the population spread
