Central Tendency

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What is central tendency?

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Central tendency is a statistical measure that identifies a single value as representative of an entire dataset, summarizing the data with a single score.

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CCSS.6.SP.A.3

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What are the three main measures of central tendency?

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The three main measures of central tendency are mean, median, and mode.

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CCSS.6.SP.A.3

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How is the mean calculated?

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The mean is calculated by adding all the values in a dataset and dividing by the number of values.

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CCSS.6.SP.B.5C

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What is the median?

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The median is the middle value in a dataset when the values are arranged in ascending or descending order.

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CCSS.6.SP.B.5C

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How do you find the mode of a dataset?

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The mode is the value that appears most frequently in a dataset.

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CCSS.6.SP.B.5C

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What is an outlier?

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An outlier is a data point that differs significantly from other observations in a dataset, which can skew the results of the mean.

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When is the median a better measure of central tendency than the mean?

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The median is a better measure when the dataset contains outliers or is skewed, as it is not affected by extreme values.

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CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

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What percentage of data lies within the interquartile range (IQR)?

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The interquartile range (IQR) contains the middle 50% of the data.

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CCSS.6.SP.B.5C

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How do you determine if there is a mode in a dataset?

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If no number repeats, the dataset has no mode. If one number repeats most frequently, that number is the mode.

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CCSS.6.SP.A.3

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What is the formula for calculating the mean?

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Mean = (Sum of all values) / (Number of values)

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CCSS.6.SP.B.5C