Exploring Linear Regression Techniques with Desmos

What is the first step to start using Desmos for linear regression?

• Clicking on the 'Graphing Calculator' button

• Entering data directly into the graph

• Drawing a scatter plot by hand

• Using a different software

What should you ensure when entering data into Desmos?

• Entering y values in the top row and x values in the bottom row

• Entering x values in the top row and y values in the bottom row

• Entering x and y values in any order

• Entering only x values

What is the purpose of zooming out after entering data in Desmos?

• To see the entire scatter plot

• To change the data points

• To save the graph

• To delete the data

What symbol is used in Desmos to indicate a regression equation?

• Equal sign (=)

• Tilde (~)

• Minus sign (-)

• Plus sign (+)

What does the slope represent in the context of the problem?

• The initial value of x

• The initial value of y

• The change in y per unit change in x

• The change in x per unit change in y

What is the y-intercept in the context of the problem?

• The height of a 12-year-old child

• The height of a 10-year-old child

• The height of a newborn

• The average height of children

How do you calculate the height of a 12-year-old child using the linear regression model?

• By dividing the y-intercept by 12

• By subtracting 12 from the y-intercept

• By multiplying the slope by 12 and adding the y-intercept

• By adding 12 to the y-intercept

What is the approximate height of a 12-year-old child according to the model?

• 130.7 cm

• 120.5 cm

• 150.7 cm

• 160.5 cm

Why is it beneficial to use technology like Desmos for linear regression?

• It is the only way to do linear regression

• It is faster and more accurate than doing it by hand

• It is more fun

• It requires no understanding of the data

What should you do if you have questions while working on the problem?

• Skip the questions

• Ask the teacher for help

• Guess the answers

• Use a different method