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Statistics FormulasStatistics Formulas Binomial Probability Mass Function The probability of getting exactly k successes out of n events where the probability of k on each event is p: Mean: Variance: Standard deviation: "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #2 20060504 01:58:59
Re: Statistics FormulasPoisson Distribution A random variable X taking values 0,1,2 .. is said to have a Poisson distribution with parameter if its proabability distribution is given by where r=0,1,2.... The mean of the Poisson Distribution The variance of the Poisson Distribution The mean and the variance of the Poisson Distribution is equal to . Character is who you are when no one is looking. #3 20080307 03:32:02
Re: Statistics FormulasProduct Moment Correlation Coefficient (PMCC) The least squares regression line y = a + bx and Where Last edited by Daniel123 (20080323 12:32:39) #4 20080307 03:41:49
Re: Statistics FormulasNormal Distribution Function Last edited by Daniel123 (20080416 06:14:04) #5 20081207 23:50:57
Re: Statistics FormulasStandard Deviation where and is the mean. Standard Deviation where d = x  A, where A is the Assumed mean. Standard Deviation for Discrete series: In discrete series when deviations are taken from Arithmetic Mean, where and is the mean. When deviations are taken from Assumed mean, where d = x  A and A is the Assumed mean. Variance Variance is the square of Standard Deviation. The positive square root of the variance is defined as Standard Deviation. Standard Deviation for the first 'n' Natural numbers is Character is who you are when no one is looking. 