What does the p value tell you
[DOC File]AP Stats – Chapter 21 Reading Guide
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What does the p-value of the test statistic tell you? The Acme corp. wished to predict maintenance costs per year on its factory equipment by knowledge of the equipment’s age. The following data was collected which yielded the regression equation: (see the printout)
[DOC File]Practice Midterm Exam - Duke University
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Read the “Step-By-Step Example” on pages 467-468. You may be asked to do this on the upcoming test. Do the “TI-Tips” on pages 468-469. Make sure you know how to do this on the test. P-Values and Decisions: What to Tell About a Hypothesis Test. Hypothesis tests are particularly useful when we must make a decision.
[DOC File]What a p Value Can and Can Not Tell You
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What does this tell us that the p-value doesn't tell us? (I am looking for one particular numerical summary that should be reported in addition to the p-value.) Confidence interval. TABLE 1 (2) (13 points) Another group of students plans to compare resistances of copper wire at 200 and 300 C. They plan to take 15 measurements at 200 and 15 ...
[DOCX File](1) ( points) Give the p-value for testing H0: with a z ...
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It uses the p-value. If P>.05 retain the null and if P< .05 reject the null. The effect size tells us how strong the effect is, it tells us the size of the effect. Significance testing doesn't tell us this it only tells us whether or not there probably is a relationship. Effect size is the r value.
[DOC File]Appendix A: Experimental Error Analysis
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For the chi-squared test, the p-value equals 0.733. Using the method you selected in part a, what does the p-value tell you about whether the numbers are randomly selected? c) I want you to change the frequencies for 8 and 9 above so that the p-value for your analysis is much smaller than the one in part b.
[DOC File]Describe effect size estimates, tell how they are related ...
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Don’t Say You Accept The Null Hypothesis! Say You Fail to Reject It. Always Report The P-Value As the Strength of Evidence. Memorize (or write into your little blue booklets) the Critical Values for .95, .99, .999. Confidence Levels both one and two sided (tailed). Do the “Just Checking” on page 488. Make sure you read “The Step-By-Step ...
[DOC File]1)
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What does P( 2, ) tell you about your experiment As discussed above, the value of can tell you if something is wrong with your experiment or if it agrees with theory. P( 2, ) does the same thing, except that it provides a more precise statement of the agreement between theory and experiment.
[DOC File]CHAPTER 1
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It tells us the precise value of the variance within the population. It gives you a measure of how well your sample parameter represe nts the population value. It is unaffected by outliers.
[DOC File]AP Stats – Chapter 20 Reading Guide
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A large p-value means that there is a good chance that the relationship is statistically significant. If the two variables are not related in the population, then less than 5% of the samples you could ever take would give you a test statistic of 3.84 or larger. All of the above.
P-Value
A p value can not tell you that you have an important finding. A small p value does not exempt the researcher from using judgement to arrive at the correct interpretation of a research finding. All the issues regarding theoretical, practical, or clinical significance of a research finding are always present.
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