'Reject null' diaporamas de présentation

Hypothesis testing

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How much sleep did you get last night?

How much sleep did you get last night?. <6 6 7 8 9 >9. Chapters 17. Testing Hypotheses and Confidence Intervals. ISU ACT Math Scores - 2012. New students on campus Averages ISU Math Score = 23.5 State of Illinois = 21.0 National = 21.1 SD =5.3 New students at ISU=5,147.

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How much sleep did you get last night?

How much sleep did you get last night?. <6 6 7 8 9 >9. Chapters 20 & 21. Testing Hypotheses About Proportions. ISU ACT Math Scores - 2012. New students on campus Averages ISU Math Score = 23.5 State of Illinois = 21.0 National = 21.1 SD =5.3 New students at ISU=5,147.

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Single Factor Experimental Designs I

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MGMT 276: Statistical Inference in Management Fall , 2013

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Why Statistics is worth the Stigma

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Chi-square Procedures

Chi-square Procedures. Chi-square formula. Observed is score we get Expected we would get if there w ere no differences. Chi-square formula. Once we have found the Chi square value, then we need to go to a Chi-square table of numbers for: At the Level of Significance we set.

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Returning to Consumption

Returning to Consumption. More on Consumption. We return to the consumption problem to illustrate the issue of heteroscedasticity It turns out that OLS may NOT give us the best estimate of the MPC

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PSY 1950 Null Hypothesis Significance Testing September 29, 2008

PSY 1950 Null Hypothesis Significance Testing September 29, 2008. vs. Finite Population Correction Factor. SEM and central limit theorem calculations are based on sampling with replacement from idealized, infinite populations

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Statistics fun and exciting Workshop

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Minimizing Chance of Type I and Type II Errors

Minimizing Chance of Type I and Type II Errors. O.J. Simpson trial: the situation. O.J. is assumed innocent. Evidence collected. O.J. Simpson trial: jury decisions. In criminal trial : The evidence does not warrant rejecting the assumption of innocence. Behave as if O.J. is innocent .

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Statistical Analysis I have all this data. Now what does it mean?

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Chapter 9

Chapter 9. Introduction to the Analysis of Variance Part 2: Oct. 24, 2013. Planned Comparisons. When we reject null hypothesis in ANOVA, we conclude group means are not all the same But exactly which groups differ? Not known from overall F test Planned comparisons

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Independent Sample T-test

Independent Sample T-test. Classical design used in psychology/medicine N subjects are randomly assigned to two groups (Control * Treatment). After treatment, the individuals are measured on the dependent variable.

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HYPOTHESES INFLUENCE OF ANTAGONISM ON DRUG ACTION

HYPOTHESES INFLUENCE OF ANTAGONISM ON DRUG ACTION. NULL HYPOTHESIS Effect on intestinal motility Acetylcholine = NSS= Acetylcholine + Atropine = Acetylcholine + Epinephrine ALTERNATIVE HYPOTHESIS Effect on intestinal motility

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Inferential Statistics (Part IV) Chapter 8 Significance Using Inferential Statistics

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Ch 5: Hypothesis Tests With Means of Samples

Ch 5: Hypothesis Tests With Means of Samples. Pt 3: Sept. 17, 2013. Confidence Intervals. CI is alternative to a point estimate for an unknown population mean Last week, we discussed how to calculate 95% and 99% CI (both 1 and 2-tailed). Now, how to use these CI for hypothesis testing

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