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The linear correlation between violent crime rate and percentage of the populati

ID: 3130035 • Letter: T

Question

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. O Yes O No What might be a lurking variable between percentage of the population with a cell phone and violent crime rate? OA. the average cell phone's effectiveness as a weapon O B- the police Oc. the economy QD. overall cell phone signal strength

Explanation / Answer

a)

As r is negative and is close to -1 (-0.918), then there is a strong negative association,

OPTION A: YES [ANSWER]

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b)

It makes sense that the answer is

OPTION C: THE ECONOMY [ANSWER]

That is, the greater the economy is, the less people are pushed to commit crimes.

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