College of Saint Elizabeth Effect of Police on Crime Rate Statistics Worksheet

Question Description

The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime . Before making a final decision , the council asked the chief of police to survey other cities of similar size to determine the relationship between the number of police and the number of crimes reported . The chief gathered the following sample information.

THE PICTURES BELOW HAS THE CHART WITH THE NUMBERS. USE THAT TO ANWSER THE FOLLOWING QUESTIONS. ALL WORK SHOWN ON GOOGLE SHEETS. NO GOOGLE SHEETS. NO CREDIT

1) Which variable is the dependent variable and which is the independent variable ? Hint : Which of the following makes better sense : with more police have fewer crimes , or cities with fewer crimes have more police ? Explain your choice.

2)Draw a scatter diagram

3)Determine the correlation coefficient

4)Interpret the correlation coefficient . Does it surprise you that the correlation coefficient is negative ?

ANWSER ALL 4 QUESTIONS WITH WORK, GRAPHS, AND CALCULATIONS ON GOOGLE SHEETS PLEASE .

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