Sociology/Criminology/Economics: Recordscomparing unemployment rates, violent crime rates (per 1,000) andproperty crime rates (per 1,000) were gathered in a state for theyears 1975 - 2005 (n = 31). Below are the scatterplots,regression lines, and corresponding statistics for these 31years.
| Â Â Â Â Â Â Â Â Â | Violent Crime -vs- Unemployment
x = Unemployment Rate (in %)
y = Violent Crime Rate (in crimes per 1,000 people)
correlation coefficient:
r = 0.049
regression equation:
Å· = 0.061x + 7.12
sample size:
n = 31 |
| Â Â Â Â Â Â Â Â Â | Property Crime -vs- Unemployment
x = Unemployment Rate (in %)
y = Property Crime Rate (in crimes per 1,000 people)
correlation coefficient:
r = 0.773
regression equation:
Å· = 2.259x + 29.70
sample size:
n = 31 |
Answer the following questions regarding the relationshipbetween unemployment and these two types of crime rates.
(a) Is there a significant linear correlation betweenunemployment and violent crime rates?
YesNo   Â
(b) Is there a significant linear correlation between unemploymentand property crime rates?
YesNo   Â
(c) Choose the most valid concluding statement.
There is no correlation between unemployment and crimerates.While there is a significant correlation between unemploymentand property crime rates, there is no such correlation betweenunemployment and violent crimerates.     There is a significantcorrelation between unemployment and all types of crime rates.
