Here’s a structured view of your keywords and their corresponding answers:
| Key Word | Answer | |--------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------| | two-variable data | Data that are described by two different variables, such as height and weight. These data can be graphed on a Cartesian coordinate plane. | | causation | A cause-and-effect relationship in which one variable controls the changes in another variable. | | correlation | A measure of the strength of the relationship between two variables. | | negative correlation | A linear association between two variables such that when one variable increases, the other variable decreases. | | positive correlation | A linear association between two variables such that when one variable increases, the other variable increases. | | r-value | A number that expresses the strength of the correlation between two variables. It also shows whether the correlation is positive or negative. The correlation coefficient is called r. | | independent variable | The variable plotted on the x-axis; also called the explanatory variable. In an experiment, we see how changing the independent variable affects the dependent variable. | | dependent variable | The variable plotted on the y-axis; it is also called the response variable. This variable responds to changes in the independent variable. | | explanatory variable | The variable plotted on the x-axis; also called the independent variable. In an experiment, we see how changing the explanatory variable affects the response variable. | | response variable | The variable plotted on the y-axis; it is also called the dependent variable. This variable responds to changes in the explanatory variable. | | correlation coefficient | A measurement of the association between two variables. The closer the value is to 1, the more likely it is that there is a positive correlation; the closer to -1, a negative correlation. It is also called Pearson's correlation coefficient. | | scatterplot | A graph displaying a set of data as a collection of points. |
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