Assignment 1 chapters 14
Chapter 2 — data sets 1, 2 and 3
Pg. 35 (activity)
 Complete the steps to compute the measures of central tendency. You may do this by opening the data set chapter 2 data set 1 and then following the steps outlined.
Pg. 39
 Question #2 Compute the mean, median and mode for the three sets of scores opened as chapter 2 data set 2. Use SPSS and print out a copy of the output.
 Question #3 Compute the means for the set of scores opened as chapter 2 data set 3 using SPSS.
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Chapter 3— data sets 1, 2, 3, and 4.
Pg. 52 – Computing measures of variability
Steps two through nine are used to compute the measures of variability that are discussed in chapter 3
the first step is open the file name chapter 3 data set 1.
Here are steps 29

 click analyze à descriptive statisticsàfrequencies
 doubleclick on the reaction time variable to move it to the variables box
 click on the statistics button and you will see the frequencies statistics dialog box. This dialog box is used to select the variables and procedures you want to perform
 under dispersion, click STD deviation
 under dispersion click variance
 under dispersion click range
 click continue
 click ok
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Pg. 53 Measures of dispersion
 Open Chapter 3 data set 2
 complete steps 19 again, however in step 3 select both variables– by clicking on each one, selecting it and then clicking the “move” arrow.
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Pg. 57
 Open chapter 3 data set 3– two variables are height and weight
 Question #11 compute all of the measures of variability you can for height and weight.
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 Question #12 How can you tell whether SPSS produces a biased or an unbiased estimate of the standard deviation? Answer this on the same word doc.
 Open chapter 3 data set 4
 Question 13 use SPSS and compute the biased and unbiased values of the standard deviation and variance for the set of accuracy scores in the data set.
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Pg. 77
question 1
 open chapter 4 data set 1
 complete task a only– create a frequency distribution and a histogram for the set. Paste to word and send me a copy
Pg. 78
question 3
 open chapter 4 data set 2
 use SPSS to create a bar chart with one bar for each day
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question 4
 open chapter 4 data set 3
 create a pie chart using SPSS
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Quick note… It will benefit your understanding greatly by following the “practice steps” in each chapter that support/mirror your assignment.
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