Statistics Discussion

During this unit, you will learn about many different types of graphs, which graphs are most appropriate for specific data, and when graphs are misleading. For instance, a graph can misrepresent the data if it does not provide a proper representation of the data, which can be caused by the vertical scale being too small or too large, or by not starting at 0. Additionally, if a graph does not have the proper labels or if data are left out, this can also result in a graph that does not properly represent the data.

1.   What story does this visual display (graph) below tell? Describe the variables that are being compared. (Hint: There are three). Do you think that this is an accurate and fair description of the data? Is this graph clear or misleading? Why?

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Source: https://www.bls.gov/emp/ep_chart_001.htm

 

2. What story does the Pie Graph below tell? Describe what these data are representing. Do you think that this is an accurate and fair description of these data? Is this graph easy to understand? Name at least three things wrong with this graph and how you might correct them?

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Source: http://blog.jgc.org/2009/08/please-dont-use-pie-charts.html

Please create personalized and substantive responses to at least two other student main posts. In your response, include the following:

1. Review the student’s explanation of both graphs. Create a paragraph that compares the similarities and differences between their view and your view.

2. Review the student’s description of the variables described in the first bar graph above. What variables did the student note? Did you find the same variables? There are three variables in the graph, list all three and note whether or not you and the student found them all.

RESPONSE 1

Sontella Strickland posted Aug 20, 2018 10:25 PM

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Hello all, The first graph shows the earnings and unemployment rates by educational attainment in 2015. This graph categorize the different degrees and the weekly earnings of each degree level. It also display the percentage of the unemployment rates with having a degree.This graph gives a good breakdown, and very self explanatory it shows that having a degree is important. The second graph is a pie graph and it’s about Microsoft Word features this graph only shows the different type of Words, but it don’t shows much it have color codes to point out which Word is where on the graph, but it don’t show a percentage on usage, or how many people use which Word. I feel this graph could have had more categories to explain it more.

RESPONSE 2

Maria Lyons posted Aug 20, 2018 12:19 AM

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1. This graph represents earnings and unemployment rate based on an individuals level of education.  The variables that are being compared are education, salary and unemployment rate.  I do think that this is an accurate and fair description of the data.  This graph appears to be clear because it is easy to read and the information seems accurate.

 

2. The pie graph shows us different features in different versions of Microsoft Word.  I do not think this graph represents its value very well.  The different sections in the pie chart are not labeled and that makes it confusing considering that there are many versions being compared.  Three things that I see wrong in this chart are the lack of labeling, similar colors being used, and lack of accuracy.