is the manipulation variable in spss continuous or categorical when spss glm is a dependent variable it is the what is the difference between a variable and categorical variable which variable is a covariate in a glm when to use a variable as a categorical variable in spss when using a continuous variable what should the independent and the covariate be which variable is categorical variable in spss what is the difference between continuous and categorical variable are the variables a categorical variable what is the categorical variable of glm is a covariate a categorical variable what is the difference between categorical and continuous variable in spss are dependent and categorical variables continuous what is the continuous variable in a spss glm? why do glms use variables as covariates is an independent variable continuous variable of a manipulative variable? what is the difference between dependent variable and covariate? which spss variable is categorical and continuous what is the categorical variable in spss glm what is the difference between categorical and continuous variables spss?