STATS 250 Study Guide - Midterm Guide: Confounding, Random Variable, Dependent And Independent Variables

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

Document Summary

Q3 = 25% at least 75% at most. Q1 = 25% at most 75% at least. Margin of error : measure of accuracy of the sample. Conservative margin of error = uses one point to calculate the moe then goes out a bit both. How would the margin of error for a random sample of size 1000 from a population of. Amount by which the sample proportion differs from the population. ways to represent the variability of the error. 2 margin of errors would be the same. The population size has no influence on the accuracy of the sample estimates ( provided population is at least 10x as large as sample) Variable : identifies characteristic of an individual or item. Most studies, observational or experimental, are interested in learning of the effect of one variable ( explanatory variable ) on another variable ( response or outcome variable )