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9 April, 18:38

A data set has a normal distribution with a mean of 47 and a standard deviation of 4.6. Use this information to scale the horizontal axis with the mean of this distribution and values at 1, 2, and 3 standard deviations above and below the mean.

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  1. 9 April, 18:50
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    Horizontal axis with 1, 2, and 3 standard deviations above the mean are 51.6, 56.2, 60.8

    Horizontal axis with 1, 2, and 3 standard deviations below the mean are 42.4, 37.8, 33.2

    Step-by-step explanation:

    A data set has a normal distribution with a mean of 47 and a standard deviation of 4.6

    Mean, M ⇒ 47 Standard deviation ⇒ 4.6

    From this information, you have to scale the horizontal axis with the mean of this distribution and values at 1, 2, and 3 standard deviations above and below the mean.

    Horizontal axis with 1, 2, and 3 standard deviations above the mean:

    1 standard deviation above the mean ⇒ M + SD

    ⇒ 47 + 4.6 = 51.6

    2 standard deviations above the mean ⇒ M + 2SD

    ⇒ 47 + (2 * 4.6) = 56.2

    3 standard deviations above the mean ⇒ M + 3SD

    ⇒ 47 + (3 * 4.6) = 60.8

    Horizontal axis with 1, 2, and 3 standard deviations below the mean:

    1 standard deviation below the mean ⇒ M - SD

    ⇒ 47 - 4.6 = 42.4

    2 standard deviations below the mean ⇒ M - 2SD

    ⇒ 47 - (2 * 4.6) = 37.8

    3 standard deviations below the mean ⇒ M - 3SD

    ⇒ 47 - (3 * 4.6) = 33.2
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