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25 Cards in this Set
- Front
- Back
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When should you catagorize data?
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After you have collected and examined them.
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t-Test
-definition- |
A bivariate analysis that examines the differences between the 2 groups by looking at their means while weighing the sampling error
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t-Test
-calculation- |
Calculation:
Group 1 Mean - Group 2 Mean ---------------------------- Standard error of the difference |
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Degrees of Freedom
-definition- |
A numerical way of expressing how much capacity the data have to vary
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Independent-samples t-Test
-definition- |
A t-Test used when 2 group are not connected or related to each other in a direct way
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Correlated-samples t-Test is also known as....
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Paired-Samples t-Test
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Correlated-Samples t-Test
-definition- |
Compares measurements taken at 2 different points in time from a single group of clients to determine if there is a real difference
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Correlated-Samples t-Test is used when measuring...
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1)Same group measured 2*
2)Samples are known logically 3)Used to construct a 2nd group that closely resembles the 1st 4)Differences btw. biological twins 5) Pretest Posttest Comparisons of 1 group |
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One-Sample t-Test
-defintion- |
Used to determine if a randomly drawn sample is representative of the population
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One-Sample t-Test is used when...
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The population parameters are already known
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ANOVA stands for...
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One-way Analysis of Variance
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ANOVA
-definition- |
Statistical procedure used when with an interval dependent variable and 2+ groups
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ANOVA is based on...
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The variance within groups and between groups
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ANOVA allows the researcher to...
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Understand if the groups signficantly vary
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4 Questions a researcher should consider with ANOVA
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1)Is data measured at interval and are they a random sample of larger populations?
2)Are the groups independent of each other? 3) Are the data normally distributed? 4) Is there approximately the same # of cases in each group? |
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ANOVA df will equal...
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The number of subjects minus 1
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Post Hoc Tests is used when...
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Used with multiple groups beinig compared and F is signficant
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Post Hoc Tests are done when the researcher is investigating...
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What contributed to the finding of signficance
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Bonferroni Procedure
-definition- |
Reduces the problem of finding signficance by dividing the .05 probablity level by the number of statistical tests to be conducted
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The Post Hoc procedures minimize what?
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Type 1 Error
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When should you catagorize data?
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After you have collected and examined them.
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Paired t-Test are used when you have...
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A single (1) group is measured mutliple times
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If you have Pre-test, Intervention, and Post-test you use what t-Test?
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Paired t-Test
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Independent t-Test is used when you have...
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2 groups NOT connected in a direct way
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Assumptions of T-Tests:
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1) Dependent variable is continuous
2) Normal distribution 3) Large sample to be accurate sample size - minimum |
