PSCI 2702 Lecture Notes - Statistical Significance, Null Hypothesis, Sample Size Determination
7 Jul 2014
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Class 4 psci2702a january 29, 2014. Sample and population from which we have selected the representative sample. Hypothesis is that those who say their life is good may make more money on average than anyone else in the other categories. Looking at the median knowing that america has a positively skewed distribution. Calculate their average income and compare it to the average income of americans. Research hypothesis is that more money = more means to be happy = exciting lifestyle: null hypothesis is the opposite of this; no difference between amount of money made. But the difference is one is individual and one is household income. But let us assume this is single household information. Random chance and statistically significant: random chance is reverse of statistical significance; tells you this income difference has happened randomly and means we cannot generalize to whole population. If the sig. (2-tailed) < 0. 05 you just reject null hypothesis, if the sig.
