lesson 9,10,11- measure of dispersion, tree diagram, probabilities
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Last updated 9:34 PM on 10/13/25
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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
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variance
average of the squared differences from the mean
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interquartile range (IQR)
difference between the first quartile (Q1) and third quartile (Q3)
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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
Note 
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