Quadratic Regression

What is the Desmos "code" to find linear regression equation?

What is the Desmos "code" for finding the Quadratic regression equation?

Which regression equation would you use for this data?

• linear regression

• quadratic regression

What variable is used for the "correlation coefficient"?

• a

• b

• m

• r

What does the "correlation coefficient" measure?

• how closely related the x is with the y

• how steep the line travels

• negative of positive slope

• the rate of change

This data represents the number (in thousands) of toyota tacoma trucks were sold per year.

Write the line of best fit.

Do not delete this info in Desmos!!!!

Tags

NGSS.MS-PS3-1

Use the same data from the last question.

Predict the number of toyota tacoma's (in thousands) sold in 2030

• 273

• 252

• 198

• 301

Use the same data from the last question.

What was the correlation coefficient for the toyota data?

Was it a strong enough correlation to make an accurate prediction?

• r = .35

  yes

• r = .36

  no

• r = .86

  yes

• r = .86

  no

Tags

NGSS.HS-LS3-3

A ball is tossed into the Mercury atmosphere. The x value represents the time in seconds. The y value represents the height in feet above the Mercury surface.

Write the curve of best fit using whole numbers.

Do not delete your data in Desmos.

Tags

NGSS.HS-PS2-1

• 12.5 feet

• 10.1 feet

• on the ground

• 11.8 feet