Question

Suppose you have a sample (Y1...Yn) from the random variable Y with mean and variance . Write down the formula for the sample average of Y.

Answer 1

The sample average of a set of observations from a random variable Y is calculated by summing all the individual observations and then dividing by the number of observations in the sample.

Step-by-step explanation:

The sample average of a set of observations from a random variable Y is calculated by summing all the individual observations and then dividing by the number of observations in the sample.

The sample average (or sample mean) of a set of observations Y1, Y2, ..., Yn from the random variable Y can be calculated using the following formula:

Sample Average (Ü) = (Y1 + Y2 + ... + Yn) / n

Where:

• Y1, Y2, ..., Yn are the individual observations of the random variable.
• n is the number of observations in the sample.

The sample average of a set of observations from a random variable Y is calculated by summing all the individual observations and then dividing by the number of observations in the sample.

This formula simply sums all the observations and then divides by the number of observations in the sample to calculate the average.