lesson 9,10,11- measure of dispersion, tree diagram, probabilities

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8 Terms

1
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measure of dispersion

describe the spread or variability of a dataset

2
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range

standard deviation

variance

interquartile range (IQR)

types of measure of dispersion

3
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range

difference between max and min values

4
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standard deviation

square root of the variance

5
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variance

average of the squared differences from the mean

6
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interquartile range (IQR)

difference between the first quartile (Q1) and third quartile (Q3)

7
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tree diagram

drawing that shows all possible outcomes of events or decisions

8
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standard normal distribution

normal distribution with a mean of 0 and standard deviation of 1