ECO220Y1 Lecture Notes - Lecture 1: Pie Chart, Bar Chart, Dell

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12 Sep 2018
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ECO220Y1 Full Course Notes
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ECO220Y1 Full Course Notes
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A population 150 students, how much time do these students to travel from home to university of. We have to select the subset of the population and we call it as sample because there are too many populations. When the population is small, we do the study on the whole population. When the population is large, we cannot measure all the individuals in the population. We select a subset(part) of the population, then we do the study on the subset. We do the study on the sample, we make conclusions on the population based on information from the sample. The sample just estimates the total population and it remains uncertainty. We use sample results to estimate the population result. The process to estimate the values in the population based on sample results is called statistics. When the population is too large and hard for you to investigate, we need to choose samples.

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