SOCI 328 Lecture Notes - Lecture 8: Confidence Interval
Document Summary
I. e. flipping a coin, rolling dice + adding the score i. e. taking a random sample of size n from a population and calculation proportion of people who intend to vote green in the upcoming election. Tests of significance for relationships between 2 variables i. e. a probability sample. To do inferential stats we need random sample from population. The confidence level c, which gives the probability that the interval will encompass the true parameter value in repeated samples. Results showed 53% of respondents in favour of gay marriage. 19 times out of 20 = 19/20 = 0. 95 = 95% i. e. taking a random sample of size n from a population and calculation proportion of people who intend. We calculate in our sample to conclude something about corresponding "parameters" in population. An interval calculated from the data usually in the form "estimate + margin of error" The confidence level c, which gives the probability that the interval will encompass the true parameter.
