Exam #1-Chapter 3 Flashcards by Megan Saputo

Q

What is the goal for measures of CENTRAL TENDENCY?

A

to summarize with a single representative value

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Q

What does the MEAN measure?

A

average

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Q

What does the MEDIAN measure?

A

midpoint

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Q

What does the MODE measure?

A

most frequent score(s)

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Q

Which measure is most stable?

A

MEAN

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Q

Which measure is best with outliers?

A

MEDIAN

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Q

NEGATIVE skew

A

tail is in lower numbers

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Q

POSITIVE skew

A

tail is in higher numbers

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Q

Tendencies in NEGATIVE skew

A

mean, median, mode

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Q

Tendencies in POSITIVE skew

A

mode, median, mean

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Q

Tendencies in NORMAL

A

are all equal

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Q

What is KURTOSIS?

A

how pointy or flat a distribution is

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Q

What is LEPTOKURTIC?

A

pointy distribution

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Q

What is PLATYCURTIC?

A

flat distribution

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