spss

Problem #2 Summarizing Data for a Single Variable

Part 1:

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Directions

1. The data set you will need is States

2. Variable to study is Accfat

3. Create a histogram

4. Run tests of normality and appropriate descriptive

Problem is to analyze Accfat (Accident Fatalities) and provide statistical evidence to address the following:

1. What is the mean number of auto accident fatalities?

2. Assess the distribution, report normality or lack of it, as well as skew and direction, if any.

3. Include the histogram with normality curve, (appropriate here because the data is scale), in your output, along with any test output files.

4. Remove any log files or unneeded graphs.

Part 2:

Directions

1. The data set you will need is Census90

2. Variable under study is Trans

3. Create a bar chart of the variable Trans for only people who work.

4. Create a frequency table for the variable Trans for only people who work.

5. What mode of transportation has the highest frequency and what is that frequency?

6. Remove all log files, unnecessary files, (case report summary, z.b.), and assemble your findings, including tables and charts into one document.

Discussion:

The problem requires you to separate the working folks from the non-workers to complete the analysis. This will require the construction of a filter, using the “select cases” feature of SPSS. Use the ‘hours’ variable as the filter. Examine the variables to gain a better understanding of how the filter will work. Normality testing is not required for this part of the problem.

For the bar chart, an examination of the data will show small values for some variables, and large values for others. You may want to adjust the incremental values on the y axis to show these small values more clearly. You may want t create two charts, the original unadjusted, and another with the small values shown clearly.

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