This is personal study note Copyright and original reference: https://www.youtube.com/watch?v=yNt3NnbsIzQ&list=PLsri7w6p16vtEz_J1G7HQG-Rm8vpZPtPS&index=2&t=0s ================================================================================ - Establish hypothesis - create p-value - And judge hypothesis by p-value ================================================================================ Null hypothesis and research hypothesis - Hypothesis: "exclaim or guess" about "given fact" or "fact which you want to research" - Null hypothesis: hypothesis with which you don't need to proceed the research, $$$H_0$$$ - Research hypothesis: $$$H_1$$$ ================================================================================ Testing: test "exclaim" about the given fact - When you test, you create criterion called alpha if result < alpha, $$$H_0$$$ is rejected - If alpha is located in both side: two-sided test ================================================================================ Two sided test ================================================================================ One sided test ================================================================================ statistics=calculate_statistics(data) estimated_parameter_of_population=estimate_parameter(statistics) estimated_parameter_of_population has "likelihood of wrong" alpha: - is probability of incorrect - probability of correct is 1-alpha - is called significant level - is called p-value ================================================================================ Power of hypothesis testing ================================================================================