2.6 Measure of Center Flashcards

1
Q

What are the two ways to think about center?

A

Balancing point and Halfway point

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2
Q

Symmetric Distribution

A

the mean is a good representation of a typical value of the data set

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3
Q

Properties of the Mean

A

skewed distributions can pull the mean towards its long tail, the mean might not be the most appropriate measure of center for skewed data sets

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4
Q

Balancing point

A

Mean

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5
Q

Halfway point

A

median

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6
Q

best measure of data for a skewed distribution

A

median

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7
Q

Properties of the Median

A

median is more Robust, not affected by outliers

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8
Q

Symmetric

A

mean will usually be close to the median

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9
Q

Skewed left

A

mean will usually be smaller than the median

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10
Q

Skewed right

A

mean will usually be larger than the median

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11
Q

Mode

A

noted as modality in plots rather than the actual quantity

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12
Q

Midrange

A

more rudimentary measure of center mentioned in some texts
max+min/2

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