Exploring Correlation and Linear Regression with TI-84

This video tutorial demonstrates how to use the TI-84 graphing calculator to perform linear regression analysis. It covers entering data into lists, calculating the linear regression line, enabling stat diagnostics for additional data insights, and graphing the data points along with the regression line. The tutorial provides step-by-step instructions, ensuring users can follow along and apply the techniques to their own data sets.

What is the first step to start using the TI-84 calculator for statistical calculations?

• Select the 'Graph' menu

• Select the 'Stat' menu

• Select the 'Calc' menu

• Select the 'Mode' menu

How do you clear an existing list in the TI-84 calculator?

• Press 'Delete' and then 'Enter'

• Press 'Clear' and then 'Enter'

• Press 'Backspace' and then 'Enter'

• Press 'Reset' and then 'Enter'

Which key do you press to move from List 1 to List 2?

• Left Arrow

• Up Arrow

• Down Arrow

• Right Arrow

What is the form of the linear regression equation provided by the TI-84 calculator?

• y = ax + b

• y = mx + c

• y = mx + b

• y = bx + a

What additional step is required to view the correlation coefficient and coefficient of determination?

• Turn on 'Stat Diagnostics' in the 'Mode' menu

• Turn on 'Graph' in the 'Stat' menu

• Turn on 'Diagnostics' in the 'Calc' menu

• Turn on 'Stat Plot' in the 'Graph' menu

Where do you go to turn on the 'Stat Diagnostics' feature?

• Stat menu

• Calc menu

• Graph menu

• Mode menu

What type of plot should be selected to graph the data points?

• Histogram

• Scatter Plot

• Line Plot

• Box Plot

Which lists should be selected for the X and Y variables in the scatter plot?

• List 3 for X and List 1 for Y

• List 1 for X and List 3 for Y

• List 2 for X and List 1 for Y

• List 1 for X and List 2 for Y

What should be done to adjust the viewing window for better visualization of the graph?

• Change the graph type

• Change the X and Y scales

• Change the calculator mode

• Change the list numbers

What does a correlation coefficient close to 1 indicate?

• Weak correlation

• No correlation

• Strong correlation

• Negative correlation