1.) In a regression analysis, if the slope is 1.25 and the y-intercept is -2.23, which of the following should be the least square regression equation?

A. y = -2.23x + 1.25

B. y = 1.25x - 2.23

C. y = 2.23x - 1.25

D. y = -1.25x + 2.23

2.) Which of the following is used to determine how well the least square regression line fits the sample data?

A. Regression Analysis

B. Coefficient of determination

C. Correlation

D. Pearson's Product-Moment correlation coefficient

3.) Which of the following graph is used to see the relationship between bivariate data?

A. Histogram

B. Scatterplot

C. Normal Curve

D. Frequency Polygon