DSCI module help

# DSCI module help - CHAPTER 15 TO PLOT A REGRESSION LINE ON...

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CHAPTER 15 TO PLOT A REGRESSION LINE ON THE SCATTERPLOT 1. Use the STAT editor and calculate the equation of the sample regression line 2. Press Y= (The “ Y= ” key is located at the top left of the keyboard. 3. If necessary, press CLEAR to clear any previous equation listed at equation Y1 4. Press VARS 5. Move cursor onto option 5: Statistics 6. Press ENTER 7. Move cursor onto option EQ (Highlight option 1: RegEq) 8. Press ENTER (The screen shows the regression equation next to equation Y1 .) 9. Press GRAPH (The screen should show the regression line superimposed onto the scatterplot.)

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CHAPTER 15: (OPTIONAL) CALCULATE VALUES OF Y, THE PREDICTED VALUES OF Y In the last example, X and Y were in columns L1 and L2, and the estimated regression equation was Y = 3.3X + .5 Alternatively, this could be expressed as Y = .5 + 3.3X Let us calculate the predicted values of Y ( Y = 3.3X + .5 ) and put these values in column L3. 1. Press
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## This note was uploaded on 04/18/2008 for the course DSCI 3710 taught by Professor Dr.jay during the Spring '08 term at North Texas.

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DSCI module help - CHAPTER 15 TO PLOT A REGRESSION LINE ON...

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