I of course read that next section, and beyond, but respectfully disagree that the expressions provided don't justify further explanation. For example, the author neglects to define 'X' as the set of support values for some probability distribution. That's left to the reader to figure out for some reason. Further, nowhere is 'E(X)' defined as the integral of x*f(x) dx, or that the exponent 'k' only applies to the first 'x' term in that expression (i.e. if k=3, then E(X^3) = integral of (x^3)f(x) dx. How is the reader supposed to know all that?
That was left up to me to hunt down... which is fine I guess, but I certainly wouldn't say this is "from the ground up". At the very least, link to some external content that provides the necessary definitions.
That was left up to me to hunt down... which is fine I guess, but I certainly wouldn't say this is "from the ground up". At the very least, link to some external content that provides the necessary definitions.