Previous Page Next Page Question 1 (1 point) A variable such as a person's race is usually considered to be at a measurement. Both Interval and Ratio are correct answers. nominal interval rank-order or ordinal ratio Question 2 (1 point) Error is the person's actual score minus the person's predicted score. Proportionate increase in accuracy Proportionate reduction in error Accuracy Page 1 of 6 level of Question 3 (1 point) To calculate the degrees of freedom in a chi-square test for independence, we need to know: the number of subjects and the number of cells. the number of subjects in the study. the number of rows and the number of columns. the number of row, columns, and subjects.