![]() This option makes the output easier to interpret. Check the Labels checkbox if you have meaningful variable names in row 1. ![]() On graphs, analysts place independent variables on the horizontal X-axis. These variables are also known as predictor variables, input variables, and are commonly denoted using Xs. However, in observational studies, the values of the independent variables are not set by researchers but observed instead. In randomized controlled experiments, researchers systematically set and change the values of the independent variables. Independent variables are the variables you include in the model to explain or predict changes in the dependent variable. In Excel, these variables must be next to each other so you can choose them all in one range. ![]()
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