Author note — to cover

Compare two data sets by pairing one average with one measure of spread, both interpreted in context, such as higher on average but less consistent. Stress that marks need context, not bare numbers. Foundation compares with mean or median and range; comparisons through quartiles and box plots are Higher, on the sibling page. (S4)

• Fluency — direct questions on comparing data sets with an average and the range, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).