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The curve of the probability density function for a random variable $X$ can be described by all of the following properties EXCEPT
the total area under the curve is equal to $1$.
$Pr[X=a]=0$ for any value $a$ of the variable $X$.
the curve helps describe the probability of a range of particular outcomes of $X$.
the curve helps describe the probability of a particular outcome of $X$.
the curve can be described using four statistics: mean, variance, skewness, and kurtosis.