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Review
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Zscores (Chapter 5)
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Determining the location of a score within a
distribution
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Working with standardized distributions & z
scores
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Transforming distributions
1. What is the difference between an independent
and dependent variable?
2. What are the different scales of measurement?
3. What are the different measures of central
tendency?
4. What is 1 strength and 1 weakness of each
measure of central tendency?
5. What are the degrees of freedom and when do
you use them?
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Kanuck
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Female, black lab, 10 years old
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Weight = 50 lbs
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Labrador Retrievers
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Mean weight=65
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std dev = 10
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Working dogs
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Mean weight = 65
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std. dev. = 20
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View Full DocumentWhere does Kanuck
t in these distributions?
65
65
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=20
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=10
55
45
50
50
Kanuck = 50 lbs
Labradors
(
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=65,
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=10)
Working
(
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=65,
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=20)
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An individual score by itself does not
provide much information about it²s
position within the distribution
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How do we address this issue?
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Standardize the distribution of scores
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The individual standardized scores are called zscores and the
distribution is a zdistribution
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Transforming to a zscore will tell you the
precise position of the raw scores within
the distribution
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 Fall '08
 COLLINS

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