Below is a table describing 20 people who differ on all kinds of variables, including age, IQ and self-esteem.Your task is to randomly assign each person to an experimental or a control condition for a hypothetical experiment.Start at the top of the list, and flip a fair coin to determine each person's condition.If the coin lands on heads, circle the e next to that person's participant number.If the coin lands on tails, circle the c next to that person's participant number.Then enter that person's scores for each variable in the appropriate set of blanks below the list.It is okay if your groups are do not have the same number of people.

1.When you have worked through the entire list of 20 people, compute group means on each of the variables listed USING THE STATISTICS FUNCTIONS OF YOUR CALCULATOR and enter them in the spaces provided at the bottom of the table.ROUND the numbers to hundredths of a point (two decimal places).You don't have to type the numeric answers.

2.Answer the following question(s) (type this part): On the whole, are the two groups as similar as you expected?Explain your answer. Think about the following:

a.Do the two groups seem to differ meaningfully on any of the variables measured?

b.Did random assignment appear to work better for some variables than for others?

i.Are any Mean differences meaningful?

ii.Are any SD differences meaningful?

c.This question isn't as easy as it may seem.Remember the variables are scored in very different ways.For example, is a 10-point difference in IQ similarly meaningful as a 10-point difference in age? Therefore it may help to think about "Under what conditions are any differences meaningful?"

3.Remember turn in one copy of all to me and keep one copy for yourself to grade.

ID#Cond.AgeIQSelf-esteem (SE)

1ce1614542

2ce177348

3ce218630

4ce3910836

5ce185838

6ce3710942

7ce319128

8ce2512439

9ce236440

10ce2112136

11ce289345

12ce2110744

13ce269443

14ce2511435

15ce317840

16ce1510445

17ce2512842

18ce178141

19ce2113638

20ce239742

Experimental group (n = ______)Control Group (n = ______)

ID#AgeIQSEID#AgeIQSE

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Sx_______________Sx_______________

Sx²_______________Sx²_______________

M_______________M_______________

SD_______________SD_______________

s²_______________s²_______________