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Course: Statistics and probability > Unit 5
Lesson 3: Introduction to trend lines- Fitting a line to data
- Estimating the line of best fit exercise
- Eyeballing the line of best fit
- Estimating equations of lines of best fit, and using them to make predictions
- Estimating slope of line of best fit
- Equations of trend lines: Phone data
- Linear regression review
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Equations of trend lines: Phone data
Paige collected data on how long she spent on her phone compared to how much battery life was remaining (in hours) throughout the day. Here is the data:
Time spent on phone (hours) | |||||||||
Battery life remaining (hours) |
She then made this scatterplot:
Now she wants a trend line to describe the relationship between how much time she spent on phone and the battery life remaining. She drew three possible trend lines:
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