Regression day 1
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This document provides instructions for performing regression analysis in several steps: entering variables into the stat plot, viewing the shape of the relationship, calculating which regression model to use, and checking correlation coefficients. It also discusses different types of correlations in scatter plots and various regression models including linear, quadratic, exponential, cubic, power, and sine regressions. Students are assigned a worksheet with 10 practice problems testing linear and quadratic regressions.
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Regression day 1
- 2. Steps Stat – Edit – Enter L1 and L2 Y = to turn on your stat plot Zoom Stat (9) – because you want to see what you just put into “stat” See what shape it is Stat – Calc which one you need Check out the r and r2
- 3. Scatterplots Positive Correlation Negative Correlation No Correlation
- 4. Scatter plots Strong Correlation Weak Correlation
- 5. Remember the shapes! Linear Quadratic Exponential Growth and Decay Cubic
- 6. A couple new ones to you… PwrReg SinReg
- 7. Let’s look at some problems! #43-46 #50
- 8. Let’s look at some problems! #66 #67
- 9. Let’s look at some problems #51-54
- 10. Homework Worksheet (10 questions) These are all linear and quadratic, but please know that you need to know the other types as well…we will practice more tomorrow.