Statistical Analysis Stack Exchange
Statistical Analysis Stack Exchange

Questions tagged [polynomial]

A mathematical expression w/ >1 term containing the same variable (eg, x & x^2). Polynomials are commonly used to model curvilinear relationships.

A mathematical expression with $>1$ term containing the same variable (for example, $x$ & $x^2$). Polynomials are commonly used to model curvilinear relationships.

414 questions
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Squaring Negative Explanatory Variables

Let us say I am interested in analyzing an event, which takes place at year 0. My variables are the years since the event: years before the event are coded as "negative" years (so the year before the event is year -1, the year before that is -2,…
Student In Need
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polynomial regression: what do large values of Y mean?

I have a time series of x:libor and y:money rates. using the following polynomial y=b0+b1(x)+b2(x)^2, i get values of y that exceed (or are sometimes negative) the coveriance/variance for large multiples of vector x. (i) Is my problem one of an…
incus
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Finding Inverse CDF of a Polynomially Distributed RV

Let's say there exists f(x) = 3(x-1)^2 0 < x < 1, 0 otherwise Then the CDF would surely be F(x) = 0 if x < 0, 3x^3 -9x^2 + 9x for 0 < x < 1 and 1 otherwise. How would I go about finding the inverse CDF of this RV? I can't find any possible way to…
guest122313
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