Scatter Plots and Fitted Lines
This video has examples to practice making a scatter plot, drawing a line of best fit (trend line), and writing an equation to model the situation either in slope-intercept form (y=mx+b) or point-slope form (y=m(x-x1)+y1).
1. Use the data to make a scatter plot
2. Draw a fitted line (trend line).
3. Write an equation for the line. -If you know the start amount (y-intercept) use slope-intercept form, if not, use point-slope form.
This video could work for #Algebra students who were absent, or in a flipped classroom.
This PowerPoint is available to purchase: https://www.teacherspayteachers.com/P...
0:00 Intro
0:44 Objectives
1:10 Make a scatter plot -test scores
2:07 Make another scatter plot -medical costs
3:50 Positive, Negative, or No Correlation
4:32 Non-Linear
5:03 Gap Cluster or Outlier
5:36 Draw a fitted line
6:45 Write a Prediction Equation
8:45 Dinner Guest Cost -Scatter Plot
9:57 Dinner Guest Cost -Fitted Line
10:31 Dinner Guest Cost -Prediction Equation
12:50 Dinner Guest Cost -Make a Prediction
14:07 Grillmaster -Scatter Plot, Fitted Line, Equation
17:12 Wrap-Up
#scatterplot #fittedlines