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LSP 121 -- Activity 2

Descriptive Statistics and PASW/SPSS

Goal:   Perform univariate data analyses for the datasets "Age at First Inauguration" and "Ave Jan Illinois Precipitation."

Download:   Download the datasets from univariate.xls. The datasets are on the sheets "Age at Inauguration" and "Illinois Precipitation."

Important:   Export output from the SPSS Output Window into your Word document to submit. Only include relevant output. Don't include SPSS source code and other documentation. At the top of your submission, answer the starred questions to show that you found the requested output.

Activity 2a

• Import the Age at Inauguration worksheet from the univariate.xls Excel file.

• Using the dataset "Age at First Inauguration," obtain the following information from the SPSS output.
  1. *Determine the sample mean and standard deviation by following the directions in Part E of the SPSS Tutorial.

  2. *Determine the minimum (Q0), first quartile (Q1), median (Q2), third quartile (Q3) and maximum (Q4) by following the directions in Part F of the SPSS Tutorial.

  3. Produce a boxplot of the Age at First Inauguration Dataset.

  4. *List any outliers in this dataset that are shown in the box plot produces by the analysis from Part F.

  5. *Sort the dataset by AgeAtInauguration (Part G of the SPSS Tutorial). In your Word document, type the names of the presidents that are closest to the minimum, maximum, median, first quartile and third quartile of the age.

  6. Produce a histogram of the AgeAtInauguration (Part H of the SPSS Tutorial).

Activity 2b

• Using the dataset "Ave Jan Illinois Precipitation." Also, see part A for the relevent sections in the SPSS Tutorial.
  1. *Compute the sample mean and standard deviation.

  2. *Compute Q0, Q1, Q2, Q3 and Q4.

  3. Produce a boxplot of the Ave Jan Illinois Precipitation.

  4. *List any outliers in this dataset, according to the boxplot.

  5. *After sorting the data, list the years that are closest to the minimum, maximum, median, first quartile and third quartile of the precipitation.

  6. Produce a histogram of the Ave Jan Illinois Precipitation.