Bivariate Data

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

Begin Free Trial

No credit card required

37 Sophia partners guarantee credit transfer.

299 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 32 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

Definitions

Bivariate: fancy word for 2 variables. Chances are, you've already worked with bivariate equations in algebra when you have equations like y=2x. X and Y are your 2 variables

Contingency Table: Records the data of 2 or more categorical values. Examples below to make it easier

Relative Frequency: the frequency (how often an outcome occurs) in relation to the total number of outcomes. For example, if you pull 3 red marbles out of a bag of 10 total, then the relative frequency is 3/10

Scatter plot: much like a dot plot, except it's 2-D, so you use the x- and y-axis. Much like plotting a line in algebra, except you don't connect the points and they don't necessarily have to be in a straight line. Oftentimes, they aren't straight. More examples below

Bivariate Data Explanation

Scatterplot and Contingency Table Practice

Try your hand at making a scatterplot and table with the data provided. Answer on second and fourth pages. Graph created on http://www.mathcracker.com/scatter_plot.php which is why the x-axis starts at 4 instead of 0.

More Scatter Plot Help

Visit this site for more looks at scatter plots: http://www.purplemath.com/modules/scattreg.htm

Rating

Online College Courses for Credit