PSYB10H3 Lecture Notes - Lecture 10: Descriptive Statistics, Skewness, Kurtosis
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Mgeb11 quantitative methods in economics i - lecture 10. 1 i ix: use this to estimate this is call a point estimate x is a random variable. It is known that mean of x is equal to true proportion: xe ][ X: standard deviation of x depends on whether dealing with finite or infinite population. 1 finite population size eg. class of 120 students infinite population eg canadians. Where n = sample size, n = population size, x is called the standard error of. The mean: can assume infinite population if your sample size is small relative to population size: n/n. 0. 05: in most application you are dealing with infinite population or assumed infinite population. 1: when the population is normally distributed, then x will also be normally distributed, in most application, you assume population is normally dist. If normally distributed then: normal r. v. mean standard deviation standard normal.
