Print This Page
**Univariate V. Bivariate Data**: At a Glance

- Topics At a Glance
**Types of Data**- Qualitative v. Quantitative Data
- Categorical Data
- Discrete v. Continuous Data
**Univariate v. Bivariate Data**- Analysis of Single-Variable Data
- Range
- Mode
- Mean/Average
- Median
- Quartiles
- Pictures of Single-Variable Data
- Stem and Leaf Plots
- Bar Graphs and Histograms
- Pie Charts/Circle Graphs
- Box and Whisker Plots
- Bivariate Data
- Scatter Plots
- Linear Regression
- Probability
- Outcomes and Events
- Important Elements
- Odds
- Compound Events
- Independent and Dependent Events
- Mutually Exclusive Events
- Factorials, Permutations, and Combinations
- Factorials and Permutations
- Combinations
- More Probability
- In the Real World
- I Like Abstract Stuff; Why Should I Care?
- How to Solve a Math Problem

Before we start analyzing, we need to make one more distinction between different types of data. Then our data can take a seat on the couch and we'll start getting to the root of its daddy issues.

**Single-variable** or **univariate** data refers to data where we're only observing one aspect of something at a time. With single-variable data, we can put all our observations into a list of numbers.

We take a group of people, measure their heights, and get this list of heights:

5'2'', 5'4'', 6'1'', 5'9'', 5'3''.

This is univariate data, since we're only observing one aspect (the height) of each person.

With **two-variable**, or **bivariate** data, we observe two aspects. We can put our observations into a table. The columns-and-rows kind, not the upending-and-throwing-across-the-room-in-a-rage kind.

We take a group of people, measure their heights and weights, and get the following information:

This is bivariate data, since we have observations about two aspects (the height and weight) of each person.

Exercise 1

Determine whether the following statement refers to univariate (single-variable) or bivariate (two-variable) data:

Jen measured the height and number of leaves of each plant in her laboratory.

Exercise 2

Determine whether the following statement refers to univariate (single-variable) or bivariate (two-variable) data:

Linda recorded the weight of each of her cats.

Exercise 3

Determine whether the following statement refers to univariate (single-variable) or bivariate (two-variable) data:

Roberto observed the color and model of each car in the parking lot.

Exercise 4

Luigi found the shoe size of each of his customers.

Exercise 5

Kenny wrote down the length of each song.