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Statistics Project - Jan 29 2008

# Statistics Project - Jan 29 2008 - Grace Chen N Christou...

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Grace Chen N. Christou Statistics 13-2A January 29, 2008 Statistical Analysis – Divorces and Marriages 1 The two graphs above show the number of divorces per US population in the year 2000 (divrate2000). The data set is skewed to the right, shown by the histogram, probably because a large rate of divorces, .006 or more, is unlikely. The boxplot shows 2 serious outliers at .0083 and .009. The mean is at .0043 with a standard deviation of .0019. This means that in the left dense area, out of 1000 people there are about 4 divorces, and this divorce rate has decreased over the years because in 2005, there were 3.6 divorces per 1000 population. So this distribution shows that out of the 250 people you know, there is one divorced person. 2 0 .02 .04 .06 .08 mrate2000 0   100   200   300   Density   .002   .004   .006   .008   divrate20 0 0

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The variable mrate2000 shows the number of marriages per US population in the year 2000. The histogram shows that the data is skewed to the right probably because a marriage rate larger than .02 is very unlikely. The boxplot shows 3
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Statistics Project - Jan 29 2008 - Grace Chen N Christou...

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