Let's start by organizing all the data into lists. By pushing $STAT$ and choosing the EDIT option, we can fill out the two first lists.

Fönster i räknaren som visar Stat och sedan Edit

Once the values have been entered, we can plot them by pushing $2nd$ and $Y =$ and choosing one of the plots in the list. Make sure you turn the plot ON, choose scatter plot as the type, and set L1 and L2 as XList and YList. Finally, you can pick whatever mark you want.

By pushing $GRAPH$ the calculator will plot the data set. However, before we do that check the window settings to make sure they will accommodate the graph. You can change the settings by pushing $WINDOW .$

Performing Regressions

To perform the regression we push $STAT$ and scroll right to the second option, CALC. In this menu, we see all of the available regressions the calculator can perform. Let's start with performing a quadratic regression.

Räknare som visar en anpassad linjär funktion

Now let's also perform an exponential regression. To find the option, scroll further down the list.

Which Model Fits Best?

To determine which model fits the data set best we can look at the value of $R^{2} .$ The closer this value is to $1,$ the better the fit. Comparing $R^{2}$ of the two models, we see that the quadratic model fits the data set better. Let's plot this function in the scatter plot.

Exercise

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