Linear Regression Techniques on the TI-84

This video tutorial guides students through calculating a linear regression using a TI-84 or TI-83 calculator. It covers entering data, plotting points, calculating the regression equation, and using the equation to make predictions. The tutorial also explains how to determine the goodness of fit using the correlation coefficient.

What is the primary focus of the lesson?

• Calculating a linear regression using a TI-84 or TI-83 calculator

• Solving quadratic equations

• Graphing sine and cosine functions

• Finding the area under a curve

What should you press to clear a list without deleting it?

• Clear

• Delete

• Reset

• Backspace

Which list contains the X values in this example?

• List 4

• List 3

• List 2

• List 1

What is the default plot type for the stat plot feature?

• Scatterplot

• Line graph

• Box plot

• Histogram

What should you adjust if you cannot see your data points on the graph?

• The calculator's batteries

• The window settings

• The calculator's brightness

• The stat plot type

Which menu option is used to calculate the linear regression?

• Option 3

• Option 4

• Option 2

• Option 1

What does the correlation coefficient indicate?

• The number of data points

• How well the regression line fits the data

• The y-intercept of the regression line

• The slope of the regression line

What is the significance of an R value close to 1?

• The regression line does not fit the data well

• The data points are all identical

• The regression line fits the data very well

• The data points are widely scattered

How can you call up the stored regression equation in the calculator?

• By going to the VARS menu

• By pressing the STAT button

• By pressing the Y= button

• By using the CLEAR button

What wind speed is predicted for a barometric pressure of 950 millibars?

• 100.5 knots

• 107.6 knots

• 115.2 knots

• 120.3 knots