In ............... sampling, we have no guarantee that each elemetn has some chance of being included in the study
Characteristics of the population µ (the population mean) σ (population SD) and σ2 (the population variance) are referred to as
Customers selected on the basis of life stages income levels to study buying patterns represent
Controlling extraneous variables by holding them leads to more sensitive experiments with less external validity
............... is an important technique for randomly assigning subjects to groups because it produces groups that are of equal size while controlling for time related variables.
.............. occurs when the effect of one independent variable differs depending on the level of a second independent variable.