Exploring Linear Regression with TI NSpire CX

What are the three main objectives of this tutorial?

• Entering data, plotting a pie chart, and calculating the median

• Learning basic calculator functions, plotting a bar graph, and finding the mean

• Creating a new document, entering data, and saving the document

• Plotting a scatter graph, finding the line of best fit, and drawing the line of best fit

What is the first step in creating a new document on the TI-Nspire CX?

• Selecting 'New Document'

• Selecting 'Add Graphs'

• Selecting 'Menu'

• Entering data into the spreadsheet

Why should you avoid using spaces when naming columns in the TI-Nspire CX?

• Spaces make the names too long

• Spaces are not recognized by the calculator

• The calculator does not allow spaces in names

• The TI-Nspire CX sometimes has issues with spaces

Which button do you press to add a new page to your document?

• Menu

• Control followed by Dock

• Var

• Enter

What should you select to specify the graph type as a scatter plot?

• Menu and then Graph Type

• Menu and then Scatter Plot

• Control and then Dock

• Add Graphs

How do you ensure all data points are visible on the scatter plot?

• Adjust the axes manually

• Select 'Window - Zoom'

• Select 'Zoom - Fit'

• Select 'Zoom - Data'

What is the purpose of the 'linear regression MX + B' option?

• To save the document

• To enter data into the spreadsheet

• To calculate the line of best fit

• To plot a scatter graph

What does the R value indicate in linear regression?

• The x-intercept

• The strength of the correlation

• The y-intercept

• The slope of the line

How do you add the calculated linear regression to the scatter plot?

• Select 'Menu' and then 'Function'

• Select 'Control' and then 'Dock'

• Select 'Menu' and then 'Graph Type'

• Select 'Add Graphs'

What is the final step to ensure the line of best fit is visible on the scatter plot?

• Re-enter the data

• Adjust the axes manually

• Save the document

• Zoom out to see the fit