Find where to buy the TI-84 Plus CE graphing calculator in a variety of bold, fun colors.
Download free 90-day trial versions of the most popular TI software and handheld emulators.
Explore lessons that cover essential, foundational mathematics concepts.
Enhance your teaching with a hands-on learning experience.
We are here to help with distance learning resources for schools and districts.
Update OS, transfer files andtake screen captures for yourTI-Nspire™ CX II graphing calculator.
Texas Instruments
9-12
45 Minutes
TI Connect™ CE
Students use polynomial regression to develop and assess the fit of equations modeling data. The equation models are then evaluated for reasonableness in their use for extrapolating beyond the given data sets.
In this activity, students use polynomial regression to develop and assess the fit of equations modeling data. The equation models are then evaluated for reasonableness in their use for extrapolating beyond the given data sets.
Students will learn to assess the fit of an equation to a set of data using R2. They learn that at times, the equation that best fits may not be what they first thought. Visual assessment may lead the student to believe that a cubic equation will fit best, while the quartic equation fits slightly better and yields an R2 value closer to 1.
In the additional problems, students will create a scatter plot and use polynomial regression to find an appropriate equation to fit the given NASDAQ index data and weekly gasoline price data.
TI websites use cookies to optimize site functionality and improve your experience. To find out more or to change your preferences, see our cookie policy page. Click Agree and Proceed to accept cookies and enter the site.
You can control your preferences for how we use cookies to collect and use information while you're on TI websites by adjusting the status of these categories.