measures of central tendency Flashcards

1
Q

summary statistic that represents the center point or typical value of a dataset

A

measures of central tendency

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2
Q

one of the three statistics indicating average or middlemost score between the extreme scores in a distribution

A

measures of central tendency

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3
Q

three most often used measures of central tendency

A

mean, median, mode

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4
Q

statistic at the ratio level of measurement, average, equal to the sum of the observations divided by number of observations

A

arithmetic mean

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5
Q

mean is denoted by the symbol

A

x bar

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6
Q

takes into the account of order of scores and is ordinal in nature, middle value

A

median

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7
Q

nominal in nature, most frequently occurring score

A

mode

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8
Q

one mode

A

unimodal

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9
Q

two modes

A

bimodal

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10
Q

3 or more modes

A

multimodal

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11
Q

mean is lower than the median, mode > median > mean

A

negatively skewed (left-skewed)

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12
Q

mean is higher than the median, mode < median < mean

A

positively skewed, right-skewed

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