Suppose that you recorded the number of television sets per

Suppose that you recorded the number of television sets per person and the average life expectancy for the world\'s nations. There is a high positive correlation: nations with many TV sets have higher life expectancies.

The response variable is:

The explanatory variable is:

The experimental units are:

The lurking variable that acts as a confounding factor in this study is:

Choose from:

The number of TV sets per person

The nation\'s wealth

The nation\'s life expectancy, in years

The nations

Solution

The response variable is: The nation\'s life expectancy, in years (Y)

The explanatory variable is: The number of TV sets per person (X)

The experimental units are: The nations

The lurking variable that acts as a confounding factor in this study is:The nation\'s wealth