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    Percentiles

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    Argue that in the case of a continuous random variable the kth percentile is the point such that
    P[X < or= pk/100] = k/100
    (k/100 here should be in subscript, it's not p*k/100)

    pk/100 would be the kth percentile for X. For example, the 25th percentile for X is the point p25/100.

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    https://brainmass.com/statistics/percentile/percentiles-30386

    Solution Summary

    The solution argues that in the case of a continuous random variable the kth percentile is the point such that P[X < or= pk/100] = k/100
    (k/100 here should be in subscript, it's not p*k/100).

    $2.49

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