```Vai su: http://www.WolframAlpha.com e cerca:
descriptive statistics
(seleziona "a general topic" e "a class of mathematical...")
interquartile range
mean {13,15,18,22,25}
mean {k*13,k*15,k*18,k*22,k*25}
mean {h+13,h+15,h+18,h+22,h+25}
(vedi in fondo alle uscite "alternate form")
variance
(seleziona "a mathematical definition")
variance {13,15,18,22,25}
(seleziona "population variance" e "sample variance")
variance {13*100,15*100,18*100,22*100,25*100}
standard deviation 13,15,18,22,25
(seleziona "population standard deviation" e "sample standard deviation")
sigma {13,15,18,22,25}
sigma{1300,1500,1800,2200,2500}
sigma {13+100,15+100,18+100,22+100,25+100}
expected value
skewness
skewness{1,2,3,4,5}
skewness{1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5}
-{1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5}
skewness(-{1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5})
choose 20,10
binomial distribution
binomial distribution n=40, p=0.32
binomial distribution function
(scegli "left and right endpoint" e metti: 6 - 1/8 - 0 - 0)
discrete distribution
continuous distribution
uniform distribution
(seleziona "a mathematical definition" e "a probability distribution")
exponential distribution
(seleziona "a probability distribution")
normal distribution
(seleziona "a mathematical definition" e "a probability distribution")
standard normal distribution
triangular distribution
(seleziona "a probability distribution")
distribution function
probability density function
Vedi anche:
http://www.wolframalpha.com/examples/DescriptiveStatistics.html
http://www.wolframalpha.com/examples/Probability.html
http://www.wolframalpha.com/examples/StatisticalDistributions.html
http://www.wolframalpha.com/examples/Probability.html

ALTRO

```