The linear correlation between violent crime rate and percen

The linear correlation between violent crime rate and percentage of the population that has a cell phone is 0.918 for years since 1995. Do you believe that increasing the percentage of the population that has a cell phone will decrease the violent crime rate? What might be a lurking variable between percentage of the population with a cell phone and violent crime rate? Will increasing the percentage of the population that has a cell phone decrease the violent crime rate? Choose the best option below. Yes No What might be a lurking variable between percentage of the population with a cell phone and violent crime rate? A. overall cell phone signal strength B. the average cell phone\'s effectiveness as a weapon C? the police D. the economy

Solution

The sign and the absolute value of a correlation coefficient describe the direction and the magnitude of the relationship between two variables.

from above data it is clear that increasing the percentage of the population that has cell phone decrease the violent crime rate

lurking variable between percentage of the population with a cell phone and violent crime rate is the police