Success: Square r and interpret R² as a descriptive measure of a straight-line fit for the observed pairs.
- Notice · 3 min. Ask why squaring +0.9189 cannot tell the direction on its own.
- Model · 5 min. Compute R² ≈ 0.8444 using unrounded r where possible, then convert to about 84.4%.
- Try · 6 min. Learners use their technology output to calculate the square; compare rounding differences. Provide the precomputed r only if needed and record that support.
- Compare · 5 min. Say “About 84.4% of the observed variation in visit counts is accounted for by a straight-line relation with trial hours in these six invented pairs.” Reject “84.4% of visits are caused by hours.”
- Transfer · 4 min. Students identify one unmeasured factor, such as publicity or weather, as a possible alternative, without asserting it occurred.
- Exit · 2 min. Collect R² and one bounded sentence. If a learner gives 0.9189 as R², revisit square versus input.