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15 Cards in this Set
- Front
- Back
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Internal Validity
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level of accuracy of an instrument-
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external Validity
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capacity to generalize
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construct validity
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operational definitions- any kind of study you must have a level of accuracy between operational defs. one may have a different defs than actual test items. no garauntee of validity.
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content validity
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whether tests measures match the content domain- how accurate the test items reflect the domain (fashion, cooking)
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Test retest reliability
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test and retest to produce similar results
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split half reliabilty
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1st and 2nd half are given seperately to show consistency in results
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parallel form reliabilty
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give your test and a reliable test to show credibility
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correlation
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the relationship of two or more variables- self-esteem and intelligence-formula= pearson product-moment correlation coefficient- measuring coeeficient. r=0.5
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pearson product moment
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r=0.5 r=0.2 to show relationship. r=0.5 is significant
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confidence level
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once an r score is given another answermust be given related to confidence.
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normal curve/ percentage
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need to know 0.5 is good
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T-score and Z score
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two groups mean scoreconverted raw data- tscore mean is always 50%-sd=34% 13.58% 2% on each side of mean
zscore is zero-sd=10 IQ is 100 sd=15 |
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T tests
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tests gave - mean score comparison between two groups
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IQ score weschler
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weschler IQ test is always a mean of 100 sd is 15
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anova
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compare 3 or more groups means of tests analysis of variance
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