Final answer:
Swapping x and y variables does not affect the value of the correlation coefficient 'r'; hence the correct answer is False.
Step-by-step explanation:
The question asks if swapping x and y variables affects the value of r, where 'r' refers to the correlation coefficient. The statement that swapping x and y affects the value of 'r' is False. Correlation coefficient 'r' measures the strength and direction of a linear relationship between two variables, and it does not change if we switch the variables because it is independent of the axis used.
In terms of other correlations between variables and vector properties mentioned in the references provided, the value of 'r' is the same regardless of whether 'x' or 'y' is considered the independent or dependent variable. The sign of 'r' indicates the correlation's direction (positive or negative) and is the same as the slope of the best-fit line. However, it's important to remember that correlation does not imply causation.