which of the following is a standard deviation for regression? why are the inferences in regression more accurate than those obtained from the normal data? how does weight of a sample in regression with a dummy predictor affect inferences? if you assume equal variance, what is standard deviation how to calculate weight of two groups of participants in a regression model what is the standard deviation in linear regression with a dummy predictor what is a weight difference in linear regression how does the sd on a dummy predictor differ from the mean in an experiment of linear regression? weight distribution linear regression what is mean weight of two groups of participants what is the mean of a sample for a test when the sd is larger in a dummy predicting a regression model, the inference of weight is what is the mean for weight variance in regression what is the mean weight of two groups weight difference regression what is the mean weight difference for the regression weight difference between two groups of participants which is a normal deviation of a regression model? what is the sd in regression testing why is the standard error different in weight between the two groups