276x Filetype PPTX File size 0.64 MB Source: ms.udru.ac.th
Who hate statistics!! 2 SIGNIFICANT TEST Significant test & p-value Null hypothesis vs alternative/research hypothesis Type I & II errors TYPES OF STATISTICS Descriptive statistics Inferential statistics ผผ.ผผ.ผผผผผผผ ผผผผผผผผผผผผ 2016 Significant test & p-value 3 Significant level is defined as the degree of risk that the researcher set for testing or rejecting a null hypothesis when the null hypothesis is true (Salkind, 2011). .05 and .01 are also known as the rejection level or significant level (Howell, 2010). [If .05] expect that no more than 5 times out of 100 times will decide to keep the alternative (research) hypothesis and it is wrong. ผผ.ผผ.ผผผผผผผ ผผผผผผผผผผผผ 2016 Hypotheses 4 Null hypothesis (H0) No difference [=] Research (alternative) hypothesis (H1) Difference [≠,<, >] Unknown --- two tails Known ---one tails Making Decision on H0 [hypothesis testing] The result of p-value ผผ.ผผ.ผผผผผผผ ผผผผผผผผผผผผ 2016 Type I & II errors 5 Null hypothesis (H0) No difference [=] Research (alternative) hypothesis (H1) Difference [<, >] Unknown --- two tails Known ---one tails ผผ.ผผ.ผผผผผผผ ผผผผผผผผผผผผ 2016 Type I & II errors 6 ผผ.ผผ.ผผผผผผผ ผผผผผผผผผผผผ 2016
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