2023-02-13T04:30:28+03:00[Europe/Moscow] en true <p><strong>Measures of central tendency</strong></p>, <p><strong>Mean</strong></p>, <p><strong>Mean</strong> formula</p>, <p>Mean values are a good indicator of central tendency when ...</p>, <p><strong>Outlier</strong></p>, <p><strong>Median</strong></p>, <p><strong>Median position</strong></p>, <p>The median tends to be the _____ of the common measures of central tendency.</p>, <p>The median may not be useful for data sets with _____ or _____.</p>, <p>If the mean and the median are far from each other, this implies ...</p>, <p><strong>Mode</strong></p>, <p>When we examine distributions, the _____ represent modes.</p>, <p>The mode is _____ as a measure of central tendency.</p> flashcards
MCAT Physics and Math 12.1: Measures of Central Tendency

MCAT Physics and Math 12.1: Measures of Central Tendency

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  • Measures of central tendency

    Measures of central tendency are those that describe the middle of a sample.

  • Mean

    The mean or average of a set of data (more accurately, the arithmetic mean) is calculated by adding up all of the individual values within the data set and dividing the result by the number of values.

  • Mean formula

    xi to xn are the values of all of the data points in the setn is the number of data points in the set

    xi to xn are the values of all of the data points in the set

    n is the number of data points in the set

  • Mean values are a good indicator of central tendency when ...

    ... all of the values tend to be fairly close to one another.

  • Outlier

    An extremely large or extremely small value compared to the other data values

  • Median

    The median value for a set of data is its midpoint, where half of data points are greater than the value and half are smaller. In data sets with an odd number of values, the median will actually be one of the data points. In data sets with an even number of values, the median will be the mean of the two central data points.

  • Median position

    n is the number of data values

    n is the number of data values

  • The median tends to be the _____ of the common measures of central tendency.

    least susceptible to outliers

  • The median may not be useful for data sets with _____ or _____.

    very large ranges

    multiple modes

  • If the mean and the median are far from each other, this implies ...

    ... the presence of outliers or a skewed distribution.

  • Mode

    The mode, quite simply, is the number that appears the most often in a set of data. There may be multiple modes in a data set, or—if all numbers appear equally—there can even be no mode for a data set.

  • When we examine distributions, the _____ represent modes.

    peaks

  • The mode is _____ as a measure of central tendency.

    not typically used