Correlation & Regression
NAYI Pathshala
March 11, 2018
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Correlation & Regression Definitions Coefficient of Determination The percent of the variation that can be explained by the regr...
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3/11/2018
Two Proportions
NAYI Pathshala
March 11, 2018
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Two Proportions Remember that the normal distribution can be used to approximate the binomial distribution in certain cases. Specifical...
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Two Independent Means
NAYI Pathshala
March 11, 2018
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Two Independent Means Sums and Differences of Independent Variables Independent variables can be combined to form new variables. The...
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F-Test
NAYI Pathshala
March 11, 2018
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F-Test The F-distribution is formed by the ratio of two independent chi-square variables divided by their respective degrees of freedo...
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Dependent Means
NAYI Pathshala
March 11, 2018
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Dependent Means There are two possible cases when testing two population means, the dependent case and the independent case. Most book...
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Inferences from Two Samples
NAYI Pathshala
March 11, 2018
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Inferences from Two Samples Definitions Dependent Samples Samples in which the subjects are paired or matched in some way. Dependent...
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Single Population Variance
NAYI Pathshala
March 11, 2018
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Single Population Variance The variable has a chi-square distribution if the population variance has a normal distribution. The degre...
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Chi-Square Probabilities
NAYI Pathshala
March 11, 2018
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Chi-Square Probabilities Left Tail Right Tail df 0.005 0.01 0.025 0.05 0.10 0.10 0.05 0.025 0.01 0.005 1 --- --- 0.001 0.004 0.016 ...
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Chi-Square Distribution
NAYI Pathshala
March 11, 2018
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Chi-Square Distribution The chi-square ( ) distribution is obtained from the values of the ratio of the sample variance and population...
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Testing a Single Proportion
NAYI Pathshala
March 11, 2018
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Testing a Single Proportion You are testing p, you are not testing p hat. If you knew the value of p, then there would be nothing to te...
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Testing a Single Mean
NAYI Pathshala
March 11, 2018
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Testing a Single Mean You are testing mu, you are not testing x bar. If you knew the value of mu, then there would be nothing to test. ...
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Confidence Intervals as Hypothesis Tests
NAYI Pathshala
March 11, 2018
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Confidence Intervals as Hypothesis Tests Using the confidence interval to perform a hypothesis test only works with a two-tailed test. ...
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Probability Values (Classical Approach , Probability-Value Approach)
NAYI Pathshala
March 11, 2018
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Probability Values Classical Approach The Classical Approach to hypothesis testing is to compare a test statistic and a critical value...
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