The linear correlation between violent crime rate and percentage of the populati
ID: 2931304 • Letter: T
Question
The linear correlation between violent crime rate and percentage of the population that has a cell phone is minus0.918 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.
No
Yes
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 police
C. the economy
D. the average cell phone's effectiveness as a weapon
Explanation / Answer
As we can see that there is lurking variable between percentage of the population with a cell phone and violent crime rate, correlation between them do not imply causation.
Hence answer is No.
Lurking variables are one kind of extraneous variable. They are neither of the variables under investigation (explanatory and response variables), but some other random variables that influences one or both. These random third variables are called lurking variables because they go unnoticed by lurking beneath the surface of the variables of interest, making the relationship between them seem stronger or weaker than it actually is.
Hence here the lurking variable is C. the economy
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