Quadratic Regression Concepts

This lesson covers quadratic regressions, building on previous lessons about linear regressions. It guides students through finding a quadratic function that best fits given data, using a calculator to input data, plot points, and calculate the regression equation. The lesson emphasizes the importance of rounding answers and interpreting the results, highlighting a perfect match with an R squared value of 1.

What is the main focus of this lesson compared to previous ones?

• Cubic regressions

• Exponential regressions

• Quadratic regressions

• Linear regressions

What is the goal when finding a quadratic function for data?

• To find a linear function

• To find a quadratic function

• To find an exponential function

• To find a cubic function

What is the first step in performing a regression analysis?

• Clear the lists

• Edit the data

• Graph the data

• Calculate the regression

How do you clear previous data from the lists?

• Press reset

• Press backspace

• Press clear and then enter

• Press delete

What values are entered into List 1?

• Values for z

• Values for a

• Values for x

• Values for y

What should you do after entering data into the lists?

• Set up the plot

• Calculate the regression

• Clear the lists

• Graph the data

Which plot should be highlighted for regression analysis?

• Plot 3

• Plot 2

• Plot 4

• Plot 1

What is the next step after setting up the plot?

• Press zoom one

• Press zoom nine

• Zoom out

• Zoom in

Which option is selected for quadratic regression calculation?

• Number 6

• Number 5

• Number 4

• Number 3

What is the value of 'a' in the quadratic equation?

• 2.08

• 1.62

• 3.94

• 3.08