d Use the Frequencies procedure to construct a table of the percentage of cases

# D use the frequencies procedure to construct a table

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d. Use the Frequencies procedure to construct a table of the percentage of cases at each value of AGE. Compare the theoretical calculation in (c) with the actual distribution of age in the sample. From the table, what percentage of people in the sample are 25 years old or less? Is this value close to what you calculated? e. Using the Descriptives procedure in SPSS, report the following values for the sampling distribution of AGE: mean, standard error of the mean. 2. The SPSS Descriptives procedure can calculate Z scores for any distribution. We’ll use it to study the distribution of education in the GSS 2014 file. Locate the Descriptives procedure in the Analyze menu, under Descriptive Statistics , then click Descriptives . We can select one or more variables to place in the Variable(s) box; for now, we’ll just place EDUC (years of education) in this box. Check the box in the bottom left corner ( Save standardized values as variables) , to create standardized values, or Z scores, as new variables. Any new variable is placed in a new Column in the Data View window and will then be available for additional analyses. Click on OK to run the procedure.

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PYC 2010 Dr. Nickels Fall 2019 ____________________________________________________________________________ The output from Descriptives is brief, listing the mean and standard deviation for EDUC, plus the minimum and maximum values and the number of valid cases. Though not indicated in the Output window, SPSS has created a new Z score variable for EDUC. To see this new variable, switch to the Data View screen. Then, go to the last Column, scrolling all the way to the right. By default, SPSS appends a Z to the variable name, so the new variable is called Zeduc. a. The first case (row) in the file has a Z score of –.25199. Knowing this z score, does this mean the education years for this person must be above, equal to, or below the mean of this sample?. Explain why. b. Using SPSS, calculate and report the mean and standard deviation of EDUC. Then, locate that first respondent’s EDUC score. What was the actual score for education? Is this value above, equal to, or below the mean? Does this match your prediction from (a)?
• Spring '18
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