Minds On

Do you think a taller person has a longer arm span than a shorter person?

Minds On

1. Was you prediction (hypothesis) correct?

2. Is there a relationship between height and arm span?

3. If a person is 160cm tall, what should their arm span be?

4. If a person has an arm span of 75cm, how tall are they?

Lesson 3: Line of Best Fit

Learning Goals

I can draw a line of best fit and use it to make predictions about a scatter plot

I can determine and describe if a relationship exists between two variables

30

Lesson 3: Line of Best Fit

Describing Scatter Plots and Lines of Best Fit

Describing Scatter Plots and Lines of Best Fit

Describing Scatter Plots and Lines of Best Fit

Lesson 3: Line of Best FitJosh records the number of ice cream cones he sells and the maximum daily temperature, as shown in the graph below.

a) How many ice cream cones would you expect to sell if the temperature was 26o ?

b) According to this graph, approximately how many ice cream cones will Tyler sell if the maximum temperature reaches 36o ?

c) Which is interpolation and which is extrapolation ? How do you know?

Lesson 3: Line of Best Fit

Practice

Pg. 153 #1, 4