Effect on the estimate of the mean

What effect does sample size, n, have on the estimate of the mean?

We typically do research and statistics by using a sample of people to estimate how the population would perform. The mean (average) is a very important statistic – we use the sample mean to estimate the population mean. In this way, we’re never sure that our estimate of the population mean is correct, but we hope it’s pretty close to what it would really be, since it would take way too much time and money to …

The expert determines what the effects on the sample size of the estimate mean are determined.