Question

10. Suppose you survey 50 people and measure their height (inches) and wingspan (inches).  You use this information to calculate the correlation between height and wingspan.  Which of the following would change the value of the correlation?

	a.	Switching which variable is the explanatory variable and the response variable
	b.	Recording the height in centimeters instead of inches
	c.	Adding a new data point that follows the same pattern (not a trend outlier)
	d.	More than one of the above
	e.	None of the above

Answer 1

Answer:

Dependent variables are properties that change in response to a change in another property.

These changing quantities are the variables.

The independent variables are the ones that are tested to see if they are the cause.

The dependent variables are the properties that change when the independent variables change.

Suppose you survey 50 people and measure their height (inches) and wingspan (inches) the following would change the value of the correlation

Switching which variable is the explanatory variable and the response variable

The option (a) is the change in the value of correlation.