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Lab 3: Descriptive Statistics

Complete the following tasks using SPSS. Print out the outputs and submit in print. For questions you need to answer, write down the answers on the printed outputs by the table or graph.

Problem Set 1

Download the dataset “heights.sav”.

  1. Follow the directions below to create value labels for variable gender: 0 = male, 1 = female.

    Variable ViewValuesFor each different value, enter the value and label and then click Add, after all pairs are defined, click OK.

  2. Follow the directions below to create a frequency table for gender. How many males and females are there in the sample and what are the corresponding proportions?

    AnalyzeDescriptive StatisticsFrequenciesVariable(s): GENDERMake sure below the boxes “Display frequency tables” is checkedOK.

  3. Follow the directions below to select all of the male cases.

    DataSelect CasesIf condition is satisfiedIf...Select GENDER into the box on topclick “=” and then click “0ContinueOK

  4. Follow the directions below to find the following for the height of males in the dataset: mean, standard deviation, variance, max, min, range. What is the relationship between standard deviation and variance?

    AnalyzeDescriptive StatisticsDescriptivesVariable(s): HEIGHTOptions...Check all items required aboveContinueOK.

  5. Create a histogram for the heights of males. Describe the shape of the distribution.

  6. Select all cases. Then follow the directions below to create a boxplot graph to compare the distribution of heights for the two gender.

    GraphsLegacy DialogsBoxplotChoose Simple and Summaries for groups of cases Variable: HEIGHT; Category Axis: GENDER OK.

  7.  Follow the directions below to explore the dataset. Produce the following output for height for each gender: means, medians, standard deviations, min, max, range, quartiles (Q1, Q2, Q3), interquartile range, extreme values, boxplots, stem-and-leaf plots, and histograms. Interpret the results.

    AnalyzeDescriptive StatisticsExploreDependent List: HEIGHT; Factor List: GENDERPlay with the specification dialogue boxes to get all items required aboveOK. 


heights.sav

Lab3_DescriptiveStatistics.pdf


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