当前课程知识点:Statistics > Final Exam > Final Exam > Discussion
Why is the normality or large sample assumption necessary to conduct the hypothesis testing for comparing two means?
What are SST, SSA and SSW? Could you show the relationship between them?
-Video 1-1 An Overview of Statistics
-Quiz
-Video 2-1 Tables and Charts for Categorical Data
-Video 2-2 Organizing Numerical Data
-Video 2-3 Tabulating and Graphing Multivariate Data
-Video 2-4 Drawing Charts by Excel
-Quiz
-Video 3-1 Measures of Central Tendency
-Video 3-2 Measures of Variation
-Video 3-3 Numerical Measures for a Population
-Video 3-4 Measures Between Two Variables
-Quiz
-Video 4-1 The Sampling Distribution of Sample Means
-Video 4-2 The Properties of the Sampling Distribution of Sample Means
-Video 4-3 The Sampling Distribution of Sample Proportions and More Sampling Distributions
-Quiz
-Video 5-1 The Concept of Point Estimation and Its Proporties
-Video 5-2 The Methods of Point Estimation
-Quiz
-Video 6-1 Overview of Confidence Interval
-Video 6-2 Confidence Interval for Population Mean When Population Standard Deviation Is Known
-Video 6-3 Confidence Interval for Population Mean When Population Standard Deviation Is Unknown
-Video 6-4 Confidence Interval for Population Proportion
-Video 6-5 Sample Size Determination
-Quiz
-Video 7-1 The General Ideas of Hypothesis Testing
-Video 7-2 Hypothesis Testing Process and Level of Significance
-Video 7-3 Errors in Making Decision
-Video 7-4 Hypothesis Testing for Mean---Critical Value Approach
-Video 7-5 Hypothesis Testing for Mean---p Value Approach
-Video 7-6 Hypothesis Testing for Mean (σ Unknown) and Proportion
-Quiz
-Video 8-2 Comparing Two Means (Independent Samples, σ1 and σ2 Are Known)
-Video 8-3 Comparing Two Means (Independent Samples, σ1 and σ2 Unknown but Assumed Equal)
-Video 8-4 Comparing Two Means (Independent Samples, σ1 and σ2 Unknown and Not Assumed Equal)
-Video 8-5 Comparing Two Means (Related Samples)
-Video 8-6 Comparing Two Proportions (Independent Samples)
-Video 8-7 Comparing Two Variances (Independent Samples)
-Video 8-8 Introduction of One-way ANOVA
-Video 8-9 Variance Decomposition
-Quiz
-Video 9-1 Simple Linear Regression Model
-Video 9-2 Interpretation of the Coefficients and Prediction
-Video 9-3 Goodness-of-fit of the Model
-Video 9-4 Residual Analysis for Assumptions
-Video 9-5 Inference about the Slope (1)
-Video 9-6 Inference about the Slope (2)
-Video 9-7 Interval Prediction for Mean and Individual
-Quiz
-Final Exam