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Permutations And Combinations
Let x1, x2, ......, x_{n} be n observations, and let be their arithmetic mean and σ2 be their variance.
Statement 1: Variance of 2x1, 2x2, ......, 2xn is 4 σ^{2}.
Statement 2: Arithmetic mean of 2x1, 2x2, ......, 2xn is 4.
Statement 1 is false, statement 2 is true
Statement 1 is true, statement 2 is true; statement 2 is a correct explanation for statement 1
Statement 1 is true, statement 2 is true; statement 2 is not a correct explanation for statement 1
Statement 1 is true, statement 2 is false
D.
Statement 1 is true, statement 2 is false
is the AM and σ2 is the variance of n observations x_{1}, x_{2}, x_{3}......x_{n}Sponsor Area
Sponsor Area