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Questions related from Emilio José Chaves
Suppose there are 4 strata groups that conform universe. Each one has its own different ordered media and the same frequence=1/4. I want to generate random values from their cummulative population...
06 June 2014 9,848 0 View
Simulating the case it is found that the result for total universe "A and B" does not resemble the SEM shape of the sectors. This analysis is important in econometrics where urban areas incomes,...
05 May 2014 2,597 2 View
Working Pareto's distribution in Excel, I use the function P=F ^ [1/(1-F) ] to estimate the fraction P that receives more than one media. When F value approaches 1 from below, it results that P...
04 April 2014 8,879 7 View
When a total universe with media T is made of two groups with medias K1 and K2, and population fractions X and X2 respectively, it applies that total media, T = K1*X + K2*(1-X) [1] . This means...
02 February 2014 9,052 2 View
If I prefer a particular parametric model, that does not authorize me to recommend it as a basic referent to be applied or tested to all univariate samples. This may be the biggest practical...
01 January 2014 5,216 4 View
Suppose cumulative population fraction P –from zero to one- is the independent variable, X is dependent of P through the relationship X=a*P^(a-1) [1]. In this case “I think” that P must be chosen...
01 January 2014 2,427 2 View
There is this exponential univariable function of aleatory fractions of population, p, useful to represent any data set ordered from high to low values of measured variable X. X(p) = (p^F)(F/p +...
01 January 2014 4,078 8 View
I understand that PDF is the derivative dXac/dK where Xac=cumulative population and K=variable value. So if we can express K as a continuous function of Xac, and we can estimate dK/dXac then PDF=...
12 December 2013 4,794 7 View