An analysis of data on a sample of 22 countries that shows a strong positive ass
ID: 3350772 • Letter: A
Question
An analysis of data on a sample of 22 countries that shows a strong positive association between the average life expectancy in the country and the number of TVs per 1,000 people in the country, that is, countries that have more TVs per 1,000 people also have higher average lifetimes.
Identify the observational units.
Identify the explanatory variable.
Identify the response variable.
An analysis of data on a sample of 22 countries that shows a strong positive association between the average life expectancy in the country and the number of TVs per 1,000 people in the country, that is, countries that have more TVs per 1,000 people also have higher average lifetimes.
Explanation / Answer
Observational Units: Countries
Explanatory Variable: Here we are using number of TVs per 1000 people to determine the life expectancy and hence,
Explanatory variable = Number of TVs per 1000 people
Explanatory variable is quantitative
Response variable: Life expectancy