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DQ ? Wk 1 PSY325

DQ ? Wk 1 PSY325

Data Analysis

For this discussion, you will organize data sets into meaningful number groupings, calculate basic descriptive values, and communicate written critiques of statistical analyses.

This exercise requires the use of a descriptive statistics calculator.  You can find this tool in some versions of Excel (as part of the Analysis ToolPak) or you can use one of the many free online descriptive calculators such as the Descriptive Statistics Calculator by Calculator Soup.  

To begin, come up with 20 different data points (that will form a set of data) and enter them into the first column of an Excel spreadsheet.  The data points can be any numbers you want as long as there are 20 of them. 

You will then use the descriptive statistics option in your descriptive statistics program or calculator.  This is explained in Chapter 1 of your course text.  You should get an output similar to the image in Figure 1.1. 

This output must contain the following values: mean, standard error, median, mode, standard deviation, sample variance, kurtosis, skewness, range, minimum, maximum, sum, and count.  Address the following points in your initial post: 

  • Begin your discussion by reporting your results for each of the values listed above. 
  • Based on this output, which single value best describes this set of data and why?  
  •  If you could pick three of these values instead of only one, which three would you choose and why? 

It is important to note that the answers to these questions may be different for each of you since you are each using unique sets of data.   

Guided Response: Review several of your classmates’ posts. Provide a substantive response to at least three of your peers, and respond to comments on your post.  Do you agree with your classmate’s selection of the best value based upon their data?  What suggestions might you make for other options? Explain your suggestions citing relevant information from the article and/or your text. Cite your sources in APA format as outlined in the Ashford Writing Center.

For this exercise, you may elect to use the “Analysis ToolPak” within Excel.  This feature is already part of the 2007 and 2010 Excel program for Windows; however, it must be activated.  The following directions were provided by the Help function within Excel.  If you experience issues while following these steps, utilize the Help function within Excel or contact Microsoft’s technical support for Excel.

The Analysis ToolPak includes the tools described below. To access these tools, click Data Analysis in the Analysis group on the Data tab. If the Data Analysis command is not available, you need to load the Analysis ToolPak add-in program.

Load the Analysis ToolPak:

  1. Click the File tab, click Options, and then click the Add-Inscategory.
  2. In the Manage box, select Excel Add-ins and then click Go.
  3. In the Add-Ins available box, select the Analysis ToolPak check box, and then click OK.

Tip:  If Analysis ToolPak is not listed in the Add-Ins available box, click Browse to locate it.
If you are prompted that the Analysis ToolPak is not currently installed on your computer, click Yes to install it.

EXAMPLE BELOW:

 

lINK FOR DESCRIPTIVE: http://www.calculatorsoup.com/calculators/statistics/descriptivestatistics.php 

 

Results for each of the values listed, this is a task that I want to shy away from it is complex. I will do my best.

Minimum:

4

Maximum:

60

Range:

56

Count:

20

Sum:

656

Mean:

32.8

Median:

30.5

Mode:

28

Standard Deviation:

18.84

Variance:

354.8

Standard Error of Mean:

4.212

Skewness:

0.04841

Kurtosis:

1.731

Relative Standard Deviation:

57.43%

 

Based on this output, the single value best describes this set of data is 4, the reason age it represent.

If I could pick three of these values instead of only one, which three would I chose and why?

  1. 20 Mode, which is the most frequently occurring value in a group, it indicates chief tendency.

  2. 30.5 Median, It the number in the middle whether small or large it requires data to categorize different types of variables. Meaning could change.

  3. 32.8 Mean, it’s the average of a set of values, meaning the level of the issues


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