MAT120W02  Project 1
Generated Feb 17, 2019 by leedhl
1. List your data set. You may either copy and paste from your Minitab Express worksheet or from your StatCrunch worksheet. If you prefer, you may save and upload your Minitab Express project. Name your variable.

2. Explain why one should think that your data are credible, reliable and current. (If you decide that the source is not credible, you may still use it for the purposes of this assignment.)
I believe the data is credible since it is using data from the U.S. Census Bureau.

3. Explain why one should think that your data are unbiased.
The data can be biased. Not everyone responds to the Census Bureau. Also, it looks like the population data was rounded to the nearest thousand from 19611999

4. Cite the source of your data using the APA format. (See page 188, #48, in your textbook for an example of an APA citation.)
Datopian. (n.d.). Population figures for countries, regions (e.g. Asia) and the world. Retrieved February 17, 2019, from https://datahub.io/core/population

5. Give the mean, standard deviation, and variance of your data
Mean 
249,960,271 
Standard deviation 
5,614,714 
Variance 
31,525,007,893,813.7 
6. Give the fivenumber summary and IQR of your data
Mínimum 
180,671,000 (StatCrunch: 180,671,000) 
Q_{1} 
212,881,500 (StatCrunch: 213,854,000) 
Median 
244,499,000 (StatCrunch: 244,499,000) 
Q_{3} 
288,866,563 (StatCrunch: 287,625,190,) 
Maximum 
323,127,513 (StatCrunch: 323,127,510) 
IQR 
75,985,063 (StatCrunch: 73,771,193) 
7. What outliers are in your data set, if any? Calculate fences and show your work. You may check your work with the boxandwhisker plot in #9.
Outliers Lower Fence = 212,881,500 – 1.5(78,985,063) = 98,903,906

no Upper Fence = 288,866,5631.5(75,985,063) = 402,844,158

Justification

No numbers outside of the fence 
8. Present a histogram for your data. (You may copy and paste from Minitab or StatCrunch.)

9. Present a boxandwhiskers plot for your data. (You may copy and paste from Minitab or StatCrunch.)

10. Describe the center, spread, and shape of your data.
Center 
244,499,000

Spread 

Shape

Skewed Right(Possible Bimodal if there was more data)

11. Conclusion: What have you learned about data and statistical analysis?