Question

sample mean is also known as ?​

Answer 1

Answer:

The sample mean is an average value found in a sample. A sample is just a small part of a whole. ... The sample mean is useful because it allows you to estimate what the whole population is doing, without surveying everyone. Let's say your sample mean for the food example was $2400 per year.

The statistic used to estimate the mean of a population, μ, is the sample mean, . If X has a distribution with mean μ, and standard deviation σ, and is approximately normally distributed or n is large, then is approximately normally distributed with mean μ and standard error .. When σ Is Known.

Explanation:

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Answer 2

Explanation:

The statistic used to estimate the mean of a population, μ, is the sample mean, . If X has a distribution with mean μ, and standard deviation σ, and is approximately normally distributed or n is large, then is approximately normally distributed with mean μ and standard error.. When σ Is Known.