Scatter Plots, Line of Best Fit, Equations

What is the equation of the line graphed?

What is an "outlier" in a scatter plot?

• a data point that does not fit the trend/average

• a line that goes through the data points in a scatter plot

• a child who does not tell the truth when playing outside

• an equation that predicts the trend

What type of correlation exists between days and weight of Mr. Hampton's exercise plan?

• positive correlation

• negative correlation

• no correlation

Which statement describes the relationship between days and weight?

• as the days go by, the amount of weight slightly decreases

• as the days go by, the amount of weight slightly increases

• it is unpredictable what will happen to the weight over time

Which graph shows a correctly drawn trend line or line of best fit?

• A

• B

• C

• D

What correlation exists between days and the height of the plant?

• positive correlation

• negative correlation

• no correlation

• quadratic correlation

Use the trend line to give the best prediction for the height of the plant at 25 days?

• 10 cm

• 15 cm

• 18 cm

• 25 cm

Which scatter plot show a linear relationship?

• Graph A

• Graph B

• Graph C

• Graph D

• None of these

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 19 chapters.

• 150 pages

• 170 pages

• 190 pages

• 210 pages

The equation of the trend line
is  y= 1/2x +1. Use the equation to determine the amount of time it would take to bike 20 laps. 
*Look at the x and y axis first before starting the problem

• 38 minutes

• 11 minutes

• 41 minutes

• 10 minutes