The mean and standard deviation in univariate analysis may be thought
of as the ____________ in bivariate analysis.

Which of the following answers would be appropriate:

*the variance and the coefficient of determination
*median and bivariate normal curve
*regression line and coefficient of correlation
*histogram and scatter plot

I think it's regression line and coefficient of correlation, but
someone else will need to do the research to see if I'm right and
document the answer.

Yeah - option 3.  The others are nonsense.