Flashcards
Chapter 10: Hypothesis Tests
Flashcards do conjunto (16)
- 1Goal of Statistical Inferenceto use data collected in a sample and statistics computed from this data to make statements about some parameter of the population
- 2Statistical Hypothesisa statement about a population parameter
(population mean, population standard deviation, population proportion, etc.) - 3Null Hypothesisa conjecture about a population parameter that is presumed to be true
usually a statement of no effect or no change - 4Alternative Hypothesisa conjecture about the population parameter that the researcher hopes is true
- 5Test Statisticsome quantity calculated from the sample data that we use to assess the strength of the evidence against the null hypothesis
- 6P valuethe probability, assuming that the null hypothesis is true, that the test statistic takes a value as extreme or more extreme that the value actually observed
small p value provides evidence against the null hypothesis - 7Significanta test that rejects the null hypothesis
- 8Insignificanta test that fails to reject the null hypothesis
- 9Significance levelthe probability of rejecting the null hypothesis when it is actually true that a researcher is willing to risk
denoted by the alpha symbol - 10Comparing p value to significance level
- 11Significance test for Population Mean **when population standard deviation**
- 12Significance test for Population Mean (cont.) **when population standard deviation is KNOWN**
- 13Significance test for Population Mean **when population standard deviation is UNKNOWN**
- 14Significance test for Population Mean (cont.) **when population standard deviation is UNKNOWN**
- 15Significance test for Population Proportion (pi)
- 16Significance test for Population Proportion (pi) (cont.)
Informações
- Descrição
- Basic terminology, single proportion tests, single sigma mean tests
- Criado por
- Erin Vales
- Visualizações
- 0
- Avaliação