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STAT 1070 > chapter 2 > Flashcards

chapter 2 Flashcards

1
Q

What is a resistant measure?

A

statistical measure that is relatively unaffected by large changes in numerical values of a small proportion of the observations in the distribution that the measure describes.

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2
Q

What is the relationship between the mean and median if the distribution is symmetric?

A

they are equal

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3
Q

What is a five number summary?

A

smallest observation, first quartile, median, third quartile, largest observation

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4
Q

What is the IQR

A

interquartile range
IQR = Q3-Q1

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5
Q

What is the relationship with IQR and outliers?

A

Call an observation a suspected outlier if it falls more than above the third quartile or below the first quartile

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6
Q

What is the best summary for a distribution that is skewed or has strong outliers?

A

five number summary

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7
Q

What is the best summary for a distribution that is symmetric and free of outliers?

A

mean and standard deviation

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8
Q
A

B

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STAT 1070 (9 decks)

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