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| Categories for interpreting research data (4) |
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Definition
descriptive,
correlation,
inferential,
regression |
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| Measures of central tendency (3) |
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| Reporting frequencies (using n & %) |
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| Measures of disperson (4) |
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Definition
range,
variance,
SD,
coefficient of variation (SD/mean) |
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Definition
intelligence,
health,
strength,
pain,
UI,
fxn |
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Definition
a=b, a≠b
a=b, b=c, so a=c
systematic
ordered
levels (NOIR) |
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| AD/BC, Celsius/Fahrenheit |
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| consistent & free from error |
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| measures what it intends to measure |
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| Systematic error = what kind of problem? |
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Definition
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| Random error = what kind of problem? |
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| Reliability coefficient = |
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Definition
| true score variance ÷ observed score |
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Term
Reliability coefficient interpretation
(weak, poor, mod, good; and specific numbers) |
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Definition
<0.3 ... weak
<0.5 ... poor
<.75 ... mod
>.75 ... good |
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Term
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Definition
test-retest (ICC),
rater (ICC),
alternate forms (limits of agreement test) |
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| Internal consistency testing (2) |
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Definition
split-half reliability,
Cronbach's alpha, item to total correlation |
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Term
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Definition
face,
content,
criterion-related,
concurrent,
predictive,
construct |
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Term
| Evaluating criterion-related validity (3 steps) |
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Definition
1. establish test-retest (ICC)
2. eliminate bias (blind subj.)
3. measure against gold standard (correlation) |
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Term
| Types of construct validity (5) |
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Definition
known groups
convergent
discriminant
hypothesis
ccriterion |
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| Convergent validity >> more/fewer correlations? |
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Definition
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| Discriminant validity >> more/fewer correlations? |
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| True change must be measured with __________ data |
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| Cross validation: retesting with another group using same test. Allows us to ??? |
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Definition
| generalize test across samples |
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Definition
| using a random sample to learn about a larger population |
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| Ways to make an inference (2) |
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Definition
estimation of parameters (point estimation, interval estimation)
hypothesis testing |
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| assumption about population parameter |
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null hypothesis
statistical hypothesis |
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alternative hypothesis
research hypothesis |
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| Test for nominal data, 2 tests |
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Definition
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| Test for ordinal data, 2 groups |
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Definition
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| Test for continuous data, 2 groups |
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Definition
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| Test for ordinal data, 2 tests |
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Definition
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| Test for continuous data, 2 tests |
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Definition
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| Test for ordinal data, >2 groups |
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Definition
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| Test for continuous data, >2 groups |
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Definition
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| Test for ordinal data, >2 tests |
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Definition
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| Test for continuous data, >2 tests |
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Definition
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| Correlation test for nominal data |
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Definition
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| Correlation test for ordinal data |
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Definition
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| Correlation test for continuous data |
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Definition
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| 3 assumptions of parametric test: |
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Definition
1. n≥30
2. normal curve
3. interval/ratio data |
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