# Regression with binary data We can check to see if our calculated mean scores are correct by using the Compare Means function of SPSS AnalyzeCompare MeansMeansregression with binary data policeconf1 as the Dependent variable and sex as regression with binary data Independent variable. Does sex influence confidence in the police? We want to know if this is a statistically significant effect in the best online trading account in us from which the sample was taken. We will see later that creating dummy variables for categorical variables with multiple levels takes just a little more work. What if you wanted to fit a linear regression model using police confidence score and something regression with binary data ethnicity, a categorical independent variable with more than two categories? We can use our SPSS results to write out the fitted regression equation for this model and use it to predict values of police confidence for given certain values of sex. Each dummy variable represents one category of the explanatory variable and is coded with 1 if the case falls in that category and with 0 if not. Using linear regression, you were able to predict police confidence regression with binary data for men and women. They should be exactly the same as the means we calculated above. This allows us to enter in the sex values as numerical. What are the results regression with binary data your mean comparison? However, from some of these, we can work out the effect of sex on confidence in the police. Our sample of data has shown us that, on regression with binary data, female respondents reported a police confidence score that is. Think about how policeconf1 is measured. Rather than just accepting these results, we now want to gauge how much of the variation in policeconf1 is explained by sex1. Using the output from SPSS, we can calculate the mean regression with binary data in the police for men and women using the following regression equation: To begin, select Transform and Recode into Different Variables. Confidence in the police. A dummy variable is a variable created to assign numerical value to levels of categorical variables.