STATS 250 Lecture Notes - Lecture 13: Sampling Distribution, Standard Deviation, Unimodality

• School: U of M
• Department: Statistics
• Course: STATS 250
• Professor: Brenda Gunderson

Document Summary

Lecture 13: population mean, distribution for a sample mean. Lecture 13: population mean and distribution for a sample mean. We go back to the scenario where we have one population of interest but now the response being measured is quantitative (not categorical). We want to learn about the value of the population mean we take a random sample and use the sample statistic, the sample mean. When we do this, the sample mean may not be equal to the population mean, in fact, it could change every time we take a new random sample. So recall that a statistic is a random variable and it will have a probability distribution. A poll was conducted by the heldrich center for workforce development (at rutgers. The first two bullets above provide what the mean and the standard deviation are for the possible sample mean values.