TI-84 Plus CE Regression Techniques

This video tutorial by Rob explains how to perform exponential regression using a TI-84 Plus CE calculator. It covers entering data, setting up a scatter plot, performing regression analysis, and storing the regression equation. The tutorial also includes steps to ensure diagnostics are turned on for accurate results. The video concludes with instructions on analyzing the regression equation and verifying data accuracy.

What is the first step in performing exponential regression on the TI-84 Plus CE?

• Enter the y data into L1

• Enter the x data into L1

• Clear the calculator's memory

• Press the graph button

How do you ensure the entire graph is visible on the TI-84 Plus CE?

• Adjust the x and y scales

• Press the clear button

• Enter the data again

• Use the zoom function

What should you do if the scatter plot does not fit well on the graph?

• Clear the graph

• Re-enter the data

• Adjust the x and y scales

• Change the graph color

What should you do if there is old data in Y1 before setting up a new stat plot?

• Change the color

• Clear it out

• Adjust the window settings

• Ignore it

What is the purpose of pressing the 'trace' button after plotting the scatter plot?

• To change the graph color

• To view the coordinates of each point

• To adjust the window settings

• To clear the graph

Why is it important to turn on diagnostics before performing regression?

• To obtain the r-square value

• To save battery

• To ensure the calculator is working

• To clear previous data

Which button do you press to access the catalog for turning on diagnostics?

• Graph

• Stat

• Vars

• Second

Where do you store the regression equation on the TI-84 Plus CE?

• In Y1

• In the graph settings

• In L1

• In the calculator's memory

What is the correct sequence to store the regression equation in Y1?

• Press Graph, select Y Vars, choose Function, select Y1

• Press Vars, select Y Vars, choose Function, select Y1

• Press Stat, select Y Vars, choose Function, select Y1

• Press Window, select Y Vars, choose Function, select Y1

What is the final step after obtaining the regression equation?

• Change the graph color

• Re-enter the data

• Review the plotted regression line

• Turn off the calculator