exercise:0723120835: Difference between revisions
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Write a computer program to calculate the mean and variance of a distribution which you specify as data. Use the program to compare the | |||
of a distribution which you specify as data. Use the program to compare the | |||
variances for the following densities, both having expected value 0: | variances for the following densities, both having expected value 0: | ||
Latest revision as of 21:00, 14 June 2024
Write a computer program to calculate the mean and variance of a distribution which you specify as data. Use the program to compare the variances for the following densities, both having expected value 0:
[[math]]
p_X = \pmatrix{ -2 & -1 & 0 & 1 & 2 \cr 3/11 & 2/11 & 1/11 & 2/11 & 3/11 \cr}\ ;
[[/math]]
[[math]]
p_Y = \pmatrix{ -2 & -1 & 0 & 1 & 2 \cr 1/11 & 2/11 & 5/11 & 2/11 & 1/11 \cr}\ .
[[/math]]