ST6 Spread and standardised scores personal learning checklist
Edexcel GCSE Statistics 1ST0 · Both papers · Foundation and Higher
Higher statements are labelled. Show full workings, construct graphs and use real sourced data for enquiry tasks.
Name ____________________ Class __________ Date __________
Tick one box per statement. Red: need help. Amber: partly confident. Green: can do independently.
| I can | Red | Amber | Green |
|---|---|---|---|
| Range, quartiles and percentiles | |||
| Calculate ranges, quartiles and IQR using a clearly stated ordered-data convention. | |||
| Read and interpret percentile boundaries and cumulative positions. | |||
| Investigate outliers and justify correction, retention or separate analysis. | |||
| Compare median and IQR in context while distinguishing IQR from overall range. | |||
| Apply translation and positive scaling to range and IQR. | |||
| Higher — standard deviation and outlier rules | |||
| Calculate and interpret named interpercentile and interdecile ranges (Higher). [Higher] | |||
| Calculate population variance and SD for raw and frequency data (Higher). [Higher] | |||
| Estimate grouped SD using weighted midpoints and appropriate calculator output (Higher). [Higher] | |||
| Compare means and SDs and explain transformation effects (Higher). [Higher] | |||
| Calculate quartile and three-SD outlier boundaries and interpret strict inequalities (Higher). [Higher] | |||
| Calculate standardised scores and compare relative position in context (Higher). [Higher] | |||
Next revision priority: __________________________________________________