Data Analysis Lab 04 Regression and Multiple Regression.

Data Analysis Lab 04 Regression and Multiple Regression

Open up Lab 3- Highlight the following 2 variables in the spreadsheet

Insert, Scatterplot

Make it Bigger- you will notice the outliers, but they are really missing values which are coded as 99 etc

To remove them click, on the first row, then under data, click filter

Click on the filter for wordsum and remove the missing values

You will see the scatterplot start to take shape-

Right click on a data point, select add trendline

Select Linear, though notice polynomial has a curve to it

Also click display Equation on Chart and Display R Squared

Print this out

Try simulation

Try curvilinear simulation

Save your dataset at the end of each lab

EDUC and WORDSUM – 2 continuous variables

So use a linear regression

Now add in the control variables

Now lets use a binary DV - Over4WordsCorrect

Now add in the control variables

Save your dataset at the end of each lab