Magtanong at makakuha ng maaasahang mga sagot sa IDNStudy.com. Magtanong ng anumang bagay at makatanggap ng detalyadong sagot mula sa aming komunidad ng mga eksperto.

What is the variance and standard deviation of a discrete random variable?

Sagot :

[tex]\mathbb\underline{Answer:}}[/tex]

✒️So the variance of X is the weighted average of the squared deviations from the mean μ, where the weights are given by the probability function pX(x) of X.

hope it helps.

Answer:

So the variance of X is the weighted average of the squared deviations from the mean μ, where the weights are given by the probability function pX(x) of X. The standard deviation of X is defined to be the square root of the variance of X. That is, sd(X)=σX=√var(X).

Step-by-step explanation: