One dollar return fraud

The world is complex, and a dollar return will lead us astray. For example, r**2=0 in a unary regression shows that two variables A and B have no relation. But in multivariate regression, the independent variable can raise the whole r**2 value, indicating that the variable is related. So the unary regression has a deceptive nature.

In one yuan regression, the newspaper advertisement expense can not bring any value to the sale, R square =0,sig=0.962, very not significant

In multivariate regression, the newspaper advertisement increased the equation R squared by 30.

The newspaper advertisement is a contribution.

The world is complex, and a dollar return will lead us astray. For example, r**2=0 in a unary regression shows that two variables A and B have no relation. But in multivariate regression, the independent variable can raise the whole r**2 value, indicating that the variable is related. So the unary regression has a deceptive nature.

One dollar return fraud