StatCrunch logo (home)

Report Properties

from Flickr
Owner: syu14
Created: Dec 3, 2014
Share: yes
Views: 1093
Results in this report
Data sets in this report
Need help?
To copy selected text, right click to Copy or choose the Copy option under your browser's Edit menu. Text copied in this manner can be pasted directly into most documents with formatting maintained.
To copy selected graphs, right click on the graph to Copy. When pasting into a document, make sure to paste the graph content rather than a link to the graph. For example, to paste in MS Word choose Edit > Paste Special, and select the Device Independent Bitmap option.
You can now also Mail results and reports. The email may contain a simple link to the StatCrunch site or the complete output with data and graphics attached. In addition to being a great way to deliver output to someone else, this is also a great way to save your own hard copy. To try it out, simply click on the Mail link.
ST101 project police salaries
Mail   Print   Twitter   Facebook


Data set 1. Police Salaries   [Info]
To analyze this data, please sign in.

I find those data from StatCrunch Explore data set. There are shows the each of states police graduation rates and the amount of violent crime, also shows the correctional officer wage and police officer wage. The relation between graduation rates and violent interested me. However, did normal police get more salaries than prison police? So, I suppose that more graduation rates will lead less violent crime. At first, I use the histogram, hoping to find out what relation. But it is quite hard to compare each column by this gram. After a few attempts, i got the following result.

First, using the boxplot can find that Mean of correctional officer Wage is lower than Police officer Wage. (Correctional: 16.48 and Police: 20.40825). The mean is the average of the Wage. So, the first result is the most of police get more salaries than correctional officer.#

Result 2: Boxplot   [Info]
Right click to copy

Second, using the Multi Plot can find that the data has a tendency to change. Check the Correlation, it is shows a negative number(-0.6923). A negative correlation is a relationship between two variables such that as the value of one variable increases, the other decreases. The result for the Multi plot is when police graduation rates increases, the amount of violent crime will decreases.#

Result 3: Multi Plot   [Info]
Right click to copy


Result 4: Correlation   [Info]
Correlation between Graduation Rate and Violent Crime is:

Result 1: Summary Stats   [Info]
Summary statistics:
ColumnnMeanVarianceStd. dev.Std. err.MedianRangeMinMaxQ1Q3
Graduation Rate4070.5366.719598.1682061.291506872.33252.584.564.976.05
Violent Crime40407.7533915.577184.1618229.118541374.570579784270.5542
Correctional Officer Wage4016.4821.54924.64211160.7339822914.26520.0910.7230.8113.79518.545
Police Officer Wage4020.4082526.4984765.14766710.8139176319.28520.2913.5933.8816.6823.705

HTML link:
<A href="">ST101 project police salaries</A>

Want to comment? Subscribe
Already a member? Sign in.
By websterwest
Dec 11, 2014

Note that means are not displayed in a boxplot. They show medians.

Always Learning