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Is there a disproportionate number of black or African-American inmates in Polk County Jail? As part of this assignment, we are going to conduct our

Is there a disproportionate number of black or African-American inmates in Polk County Jail? As part of this assignment, we are going to conduct our own statistical study in an attempt to answer this question.

For this assignment, visit the Polk County Sheriff Office website and view the current inmates.

On this page, scroll through the current inmates of Polk County Jail starting with the most recently booked. Clicking on the Details link next to each person's name opens up a detailed record of the inmate's arrest including more information about the person and charges filed.

Choose a sampling method; random, systematic, stratified, cluster, convenience, multistageand obtain a sample of 30 inmates recording the following values for each: City, Age, Height (converted to inches), Weight, Race, Sex, Eyes, and Hair. Store your data in an Excel spreadsheet or comma delimited text file.

Then, submit a post with the following:

  1. Identify the population and sample of this study.
  2. Identify the population parameter and sample statistic of this study.
  3. For each variable recorded (City, Age, Height, Weight, Race, Sex, Eyes, and Hair),
  4. identify each variable as Categorical or Quantitative
  5. identify each quantitative variable as Discrete or Continuous
  6. identify each variable's level of measurement as Nominal, Ordinal, Interval, or Ratio
  7. Describe your sampling method. For example, you could choose to perform a stratified sampling by making sure you get a representation of inmates from each of the seven days of the week (Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays).
  8. For the sample of inmates you collected, construct a relative frequency distribution of the races of those inmates of Polk County Jail. Then construct a relative bar chart corresponding to this relative frequency distribution. Use the tool of your choice (Excel, StatCrunch, Paint, etc.) to generate your output and then attach the documents or screen shots of the generated output for both distribution and bar graph.
  9. Also construct a relative frequency distribution of the ages of those inmates of Polk County Jail (use a minimum of 5 classes starting with a lower class limit of 18 and an appropriate class width) and associated histogram. Attach the documents or screen shots of the generated output for both distribution and histogram.
  10. Finally, use your histogram of ages from part 3 to predict the shape (left-skewed, right-skewed, or symmetric) of the distribution of ages of those inmates of Polk County Jail.
  11. Share your data collected by attaching your spreadsheet or comma delimited text file to this post.

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