Given a set of data that is skewed-left, there is at least _____ % of the data within 2 standard deviations.

Question

Given a set of data that is skewed-left, there is at least _____ % of the data within 2 standard deviations.

in progress 0
Huyền Thanh 1 week 2021-07-22T08:15:31+00:00 1 Answers 1 views 0

Answers ( )

    0
    2021-07-22T08:17:28+00:00

    Answer:

    75

    Step-by-step explanation:

    For non-normal distributions, we use Chebyshev’s Theorem.

    Chebyshev Theorem

    The Chebyshev Theorem states that:

    At least 75% of the measures are within 2 standard deviations of the mean.

    At least 89% of the measures are within 3 standard deviations of the mean.

    An in general terms, the percentage of measures within k standard deviations of the mean is given by 100(1 - \frac{1}{k^{2}}).

    In this question:

    Within 2 standard deviations of the mean, so 75%.

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )