To be able to conduct a ttest it is important That the indep

To be able to conduct a t-test it is important:

That the independent- as well as the dependent variable is measured on a nominal or ordinal scale.

That the independent variable is measured on an interval- or ratio scale and the dependent variable is measured on a nominal- or ordinal scale.

That the independent- as well as the dependent variable is measured on an interval- or ratio scale.

That the dependent variable is measured on an interval- or ratio scale and the independent variable is measured on a nominal- or ordinal scale.

		That the independent- as well as the dependent variable is measured on a nominal or ordinal scale.
		That the independent variable is measured on an interval- or ratio scale and the dependent variable is measured on a nominal- or ordinal scale.
		That the independent- as well as the dependent variable is measured on an interval- or ratio scale.
		That the dependent variable is measured on an interval- or ratio scale and the independent variable is measured on a nominal- or ordinal scale.

That the independent variable is measured on an interval- or ratio scale and the dependent variable is measured on a nominal- or ordinal scale.