Equations on this blog help us understand: Eq. = insight

Mathematics does so much, yet on this blog the total number of actual equations cited has so far only reached eight. Since we all count on equations for insights with metrics, I have collected them.

Here is the list of my blog posts with equations (See my post of Nov. 26, 2006: compound annual growth rate, CAGR = (ending amount / beginning amount) (1 / # of years) – 1; Oct. 31, 2007: margin of error, n = 2 * z2 and D2; June 16, 2007: Bayesian statistics, p(sΙ+) = p(+׀s) X p(s)/ p(+); Feb. 7, 2008: margin of error of a group, yl√n = 4xl√16 = x; Feb. 9, 2010 #4: linear trend lines, e.g., y = 0.2703x – 10363; Oct. 29, 2009: evenness of distributions, 1-[Σ(1/n-Si)2 ]*n/(n-1); Nov. 17, 2010: signal to noise ratio, S/N = 20 log10(Vs/Vn); and Dec. 28, 2010: Poisson distribution, P(x; μ) = (e-μ) (μx) / x.). On the mid-term you will be tested on these!