Author note — to cover

Read the mode and range from an ungrouped frequency table: mode as the value with the largest frequency, range from the extremes of the value column. Confront both traps, the largest frequency quoted as the mode and the frequency column used for the range. Grouped data gives a modal class, the next page. Both tiers. (S4)

• Fluency — direct questions on mode and range from a frequency table, 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).