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18 Cards in this Set
- Front
- Back
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Psychometrics |
What is the science of psychological measurement? |
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Trait |
Any distinguishable, relatively enduring way in which one individual varies from one another? |
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State |
Distinguishes people from each other but are not enduring? |
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Nominal |
Non-ordered categories such as male or female? |
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Ordinal |
Ordered rank such as Likert scale? |
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Interval |
Equal intervals between numbers such as temperature or ruler? |
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Ratio |
Scale with true zero point such as weight? |
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Central tendency |
A typical value for a probability distribution? |
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Mean |
Which measure of central tendency are used only with interval or ratio data? |
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Median |
Which measure of central tendency is used on ordinal data or skewed interval or ratio data? |
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Mode |
Which measure of central tendency is used on nominal data? |
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Negative |
Which type of skew has a tail to the left (test too easy)? 1 word |
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Positive |
Which type of skew has an elongated tail to the right? (Test too difficult). 1 word |
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Kurtosis |
What is the word for the steepness of a distribution? |
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98 |
What percentile is a z score of +2? (No decimals) |
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84 |
What percentile is a z score of +1? (No decimals) |
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16 |
What percentile is a z score of -1? (No decimals) |
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60 |
What T score is +1 SD? |
