Nonlinear Trends in Data
Using a Parabola to Model Data
|Scatterplot||Parabola of Best Fit|
|The scatterplot shows a trend that is modeled by a parabola, which can be sketched by hand or generated using technology to approximate the data.||A parabola can be used to approximate the trend. Note that a curve of best fit may not touch all or even any of the points on the scatterplot.|
The table shows data collected in an experiment measuring the height of an object at certain points in time.
|Time (s)||Height (m)|
Estimate the time at which the object landed on the ground.
Quadratic Functions of Best Fit
A corporation uses the data in the table to track its profits for 10 years and wants to do an analysis for a presentation.
|Year||Profit (millions of $)|
Use a spreadsheet to create a scatterplot of the data table, and estimate the corporation's profit in 3 more years.
Select the simple scatterplot from the chart options.
In most spreadsheets, the data should be highlighted before selecting the chart. If a chart with no points appears, the data set needs to be highlighted.