lecture12

# lecture12 - Compute the 5 number summary of the sample 1 5...

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Compute the 5 number summary of the sample: 1, 5, 6, 3, 9, 8, 4, 2, 0, 7, 4, 3, 2
Recall: A distribution of a variable tells us what values it takes on and how often it takes these values. Visualize the empirical (observed dataset) distribution using a histogram

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Consider the histogram of a numerical variable for a population Example: Weights of 20 year-old Canadian males (mean=182 lbs) What would this look like?
Simulated 100,000 individuals I made up values. These are not real. But comes from a distribution with the correct mean With a lot of data can draw histograms with many many bins

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Simulated 100,000 individuals I made up values. These are not real. But comes from a distribution with the correct mean With a lot of data can draw histograms with many many bins
Idea: Many populations of numerical variables have histograms that can be approximated by smooth curves Can describe overall shape of distribution with a mathematical

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## This note was uploaded on 03/28/2011 for the course STAT 100 taught by Professor D during the Spring '11 term at Simon Fraser.

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lecture12 - Compute the 5 number summary of the sample 1 5...

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