DAILY GRADE #6 ---
This presentation is the property of its rightful owner.
Sponsored Links
1 / 16

DAILY GRADE #6 --- 20 minutes Test Ch 1 & 2 Mon THQ#2 Due Thurs PowerPoint PPT Presentation


  • 44 Views
  • Uploaded on
  • Presentation posted in: General

DAILY GRADE #6 --- 20 minutes Test Ch 1 & 2 Mon THQ#2 Due Thurs. AP STAT Section 3.2: Least Squares Regression Part 3: Interpreting Residual Plots. EQ: How do you use Residual Plots to assess how well a LSRL fits a data set?.

Download Presentation

DAILY GRADE #6 --- 20 minutes Test Ch 1 & 2 Mon THQ#2 Due Thurs

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

  • DAILY GRADE #6 --- 20 minutes

  • Test Ch 1 & 2 Mon

  • THQ#2 Due Thurs


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

AP STAT

Section 3.2: Least Squares Regression

Part 3: Interpreting Residual Plots

EQ: How do you use Residual Plots to assess how well a LSRL fits a data set?


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

---scatterplot of the regression residuals against the predicted value; assess how well a LSRL fits

Residual Plots

LINEAR

ASSOCIATION:

No Pattern

Evident

Pattern

Evident

NONLINEAR

ASSOCIATION:


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Ex 1: No pattern in the residual plot, linear association appropriate


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Ex 2: No pattern in the residual plot, linear association appropriate


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Ex 3: Patternin the residual plot, linear association not appropriate.


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Ex 3: Patternin the residual plot, linear association not appropriate.


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Ex 3: Patternin the residual plot, linear association not appropriate.


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Ex 3: Patternin the residual plot, linear association not appropriate.


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Use your graphing calculator to create a residual plot using NEA and FAT.

  • To make sure the LAST regression equation your calculator found was for NEA vs FAT, recalculate the scatterplot and the LSRL forNEA vs FAT.

  • Now the residualsfor this plot are stored in a list called RESID.


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Use your graphing calculator to create a residual plot using NEA and FAT.

  • Go to STATPLOT and cut on PLOT1. Select the first graph.

  • Choose NEA as Xlist and RESID as Ylist.


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Use your graphing calculator to create a residual plot using NEA and FAT.

  • RESID is the list of the LAST RESIDUALS your calculator created.

  • ZOOM9 Compare to Residual Plot on p. 219.


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

SCATTERPLOT

LSRL

RESIDUAL PLOT


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Go back to WS "Calculating Regression Lines“. Answer the question in Part 3.

REMEMBER: You must recalculate the LSRL for this data because RESID contains the residuals from NEA and FAT.


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

MUST HIT Points When Deciding Upon a Linear Association:

[DON'T RELY ON JUST ONE]

1.Observe Scatterplot for Linearity

2. State Correlation Coefficient --- strong

vs weak

3. State Coefficient of Determination ---

strong vs weak

4. Observe Residual Plot --- pattern

(nonlinear) vs no pattern (linear)


Daily grade 6 20 minutes test ch 1 2 mon thq 2 due thurs

Assignment :

pp. 220 - 222 #39, 40, 42

pp. 227 - 228 #43, 44, 47, 48

pp. 230 - 233 #49 - 51, 53, 55


  • Login