The number of hours worked, x, and the total dollars earned, y, have a strong positive relationship.
Explain what it means to have a strong positive relationship in this situation.
S.ID.8
S.ID.6.a
S.ID.7
1
2.
The number of minutes on the phone and the customer satisfaction rating have a weak negative relationship.
Explain what it means to have a weak negative relationship in this context.
S.ID.8
S.ID.6.a
S.ID.7
1
3.
Elena collects data to investigate the relationship between the number of bananas she buys at the store, x, and the total cost of the bananas, y.
Which value for the correlation coefficient is most likely to match a line of best fit of the form y=mx+b for this situation?
S.ID.8
S.ID.6.a
S.ID.7
1
4.
1
5.
1
6.
The correlation coefficient, r, is given for several different linear models for a data set. Which value for r indicates the worst fit for the data?
S.ID.8
S.ID.6.a
S.ID.7
1
7.
Which of the following is the best estimate of the correlation coefficient for the line of best fit shown in the scatter plot?
S.ID.8
S.ID.6.a
S.ID.7
This lesson is from Illustrative Mathematics. Algebra 1, Unit 3, Lesson 8. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/1/3/8/index.html ; accessed 26/July/2021.
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