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Bivariate Data Unit
Statistics with Bivariate Data
| Term | Definition |
|---|---|
| bivariate data | data relating two quantitative variables that can be represented by a scatterplot |
| data | information that is collected about people, events, or objects |
| discrete paired data | data that involves only distinct values that are finite or countable |
| graph | a visual representation of the relationships between data collected |
| linear relationship | a relationship with a constant rate of change represented by a graph that forms a straight line |
| scatterplot | a graphical representation used to display the relationship between discrete data pairs |
| slope | the steepness of a line; rate of change in y (vertical) compared to the change in x (horizontal), rise/run, or change in y-values/change in x values, or (y2-y1)/(x2-x1), denoted as m in y=mx+b |
| trend line | a line that best fits the data points of a scatterplot |
| unit rate | a ratio between two different units where one of the terms is 1 |
| y-intercept | y coordinate of a point at which the relationship crosses the y-axis meaning the x coordinate is equal to zero, denoted as b in y=mx+b and the ordered pair (0, b) |
| origin | (0, 0) |
| direct variation | a linear relationship between two variables, x (independent) and y (dependent), that always has a constant unchanged ratio, k, and can be represented by y = kx |
| prediction | using data already taken/ given to make an accurate educated guess about what the future could hold |
Created by:
mgallego21
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