Equation Line of Best Fits (Scatter Plots)

What would be a good estimate for the regression (r) value?

• 1

• 0.6

• 0.2

• −0.4

• Positive, strong
• Positive, weak
• Negative, strong
• Negative, weak

Which is the best line of fit?

• A

• B

• C

Which statement is true about the scatter plot?

• The data shows no association between the total cost and the number of items in the cart.

• The scatter plot shows the data has a nonlinear association between the total cost and the number of items in the cart.

• The data shows a positive linear association. The more items in the cart, the higher the total cost.

• The scatter plot shows the data has a negative linear association. The mort items in the cart, the less your total cost was.

• average number of homeruns decreases by 17 homeruns for every 2 years.

• average number of homeruns increases by 17 homeruns for every 2 years.

• average number of homeruns decreases by 90 homeruns for every 17 years

• average number of homeruns increases by 90 homeruns for every 17 years.

The scatter plot shows the total amount of homeruns made by the Miami Marlins in the 2012 through 2121 regular season games. The equation that fits the data is . y=\frac{17}{2}x+90 Select the choice that would complete the statement. The 𝑦-intercept of the equation that fits the data means that in the year _____________.

• 2012, the average number homeruns made over the whole season was 17

• 2012, the average number homeruns made over the whole season was 90

• 2021, the average number homeruns made over the whole season was 90

• 90, the average number homeruns made over the whole season was 17

A scatter plot is shown. Which graph correctly shows the line of best fit for the scatter plot shown?

• 
• 
• 
• 

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y= 10

Mrs. Moises, the school counselor, keeps a candy jar in her office for students.  During one week, she kept count of how many students came to visit her and the number of candies in the jar, as show in the scatter plot.  Based on the trend line, what is the best prediction for the number of candies in the jar when 30 students visit her?

• 90

• 180

• 135

• 150

What is the equation of the line of best fit?

• y= 2x

• y=3x+7