PSCI 2702 Lecture Notes - Sampling Bias, Ordinal Data, Interval Ratio
7 Jul 2014
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Class 7 psci2702a february 26, 2014. Hypothesis testing i: compare population mean vs sample mean. Hypothesis testing ii: compare two population means by choosing two samples from each population, usually tests carried out of women vs men, huge limitation of hypothesis testing 2 is that we can only compare 2 categories. Common goal for hypothesis testing is to reject the null hypothesis (the hypothesis of no difference: for null hypothesis, sample doesn"t have distinct characteristics from the population. Way to compare more populations than hypothesis testing 2. Group of students taught by a certain professor all have a similar level of understanding. Can only reject null hypothesis when you can prove two conditions at the same time. Random chance is students in 1 group had a high score because they are intelligent, or had a low score because they are unintelligent.
