Choice "A" is correct. R-squared is the coefficient of determination and is the proportion of the total variation in a dependent variable (y) explained by the independent variable (x).Choice "b" is incorrect. The p-value is a statistical measure of the likelihood that tested data could have occurred by chance.Choice "d" is incorrect. The standard error is a measure of the standard deviation or average variability of a sampling distribution.Choice "c" is incorrect. The t-statistic is used in hypothesis testing and the computation of confidence levels.
