1. Warm Up
Please sit down and clear your desk. Do not talk. You will have until lunch to finish your quiz.

2. Intro to Linear Regression

3. Scatter Plots
A scatter plot is used to show the relationship between two variables.
Ice Cream Sales vs. Temperature

4. Let’s make one!
number of
siblings
your age

5. Making a Scatter Plot in the Calculator
STAT  Edit…
Enter the data in L1 and L2
2nd  STAT PLOT
Turn the Plot on
ZOOM  9: ZoomStat
Write these steps down so you can use them later!

6. Create a scatterplot for the following data:
Square Feet
(x)
1400
1600
1700
1875
1100
1550
2350
2450
1425
House Price in $1000s
(y)
245
312
279
308
199
219
405
324
319
255

7. Let’s find an equation for a line that best fits the data.
STAT  CALC
4: LinReg (ax + b)

8. Use the equation to predict the cost of the house that is 4000 square feet.