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Quiz 3.1
Chapter 3 - Day 3
Students Struggled With…
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Deciding on the strength of a scatterplot. They used the word strong too loosely.by a constant would not change the correlation.
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The concept that subtracting each value by a constant would not change the correlation.
Remedies…
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Encourage students to use "-ly" words for strength to soften them. However, correlations close to 0.5 should be described as moderate and not fairly strong.
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Reiterate that correlation describes the points in relationship to each other. If you shift the entire distribution the points don't move relative to each other.
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