3.6: Bivariate Data
- Page ID
- 20843
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In statistics, bivariate data means two variables or measurements per observation. For purposes of this section, we will assume both measurements are numeric data. These variables are usually represented by the letters X and Y.
Example: Sunglasses sales and rainfall
A company selling sunglasses determined the units per 1000 people and the annual rainfall in 5 cities.
X = rainfall in inches
Y = sales of sunglasses per 1000 people.
| X | Y |
|---|---|
| 10 | 40 |
| 15 | 35 |
| 20 | 25 |
| 30 | 25 |
| 40 | 15 |
In this example there are two numeric measurements for each of the five cities.