Common Core: S-ID.7
Problem 11 of 45s12-011
For a sample of houseplants, the least-squares line is predicted height (weeks since planting), with height in cm. Which sentence correctly interprets the slope?
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Solution walkthrough1:47
- In predicted height weeks, is the -intercept and is the slope.
- Slope: at weeks the line predicts cm, at weeks cm. One more week adds cm.
- Intercept: at weeks the line predicts cm, the height at planting.
- So, for each additional week, the predicted height increases by cm.
- Traps: the line predicts, it does not say exactly. Do not swap slope and intercept, or and .