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PDAM #10
| Question | Answer |
|---|---|
| What are 3 types of kurtosis called | 1, leptokurtic = positive kurtosis 2,mesokurtic = "zero" kurtosis 3,platykurtic = negative kurtosis |
| How do we measure the power of Chi-Square test | 2x2 Phi =√ Chi^2 /N |
| What is Hartley F used to measure | Homogeneity |
| What is the relation between standart error of statistic & its standart error | standart error of statistic is always SMALLER |
| What influence Validity & Reliability | Validity = Systematic Error + Random Error Reliability = only Random Error |
| What is important to pay attention to in SC Questions | Population is NOT Sample Size |
| What scale are months | month >>> ordinal |
| What is disperancy of something we are trying to measure | Measurement error NOT VARIANCE |
| If we are comparing two samples and its means have overlapping CI then their difference is not significal | No, overlapping CI is not enough to claim this |
| What is Type I Error | Type I Error = rejecting a true H0 |
| What is Type II Error | Type II Error = keeping a false H0 |
| What to use ANCOVA | if DV=continous , Categorical IV(s) + Control Variable |
| What is exploratory hypothesis | it is name for two-tailed hypothesis |
| What is Post-Hoc in ANOVA used for | to identify which specific group differ |
| When paired t-test & independent t-test is used | paired t-test >> same people measured twice independent t-test >> two different groups |
| What does EXP(β)= 1.82 mean | likelihood increase by 82% (EXP(β)-1) * 100 = x% likelihood |
Created by:
semester1.IBWL