BIOL361 Lecture Notes - Lecture 6: Confidence Interval, Statistical Parameter, Statistic
10 Apr 2016
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Learn methods for answering 2 fundamental questions that all biologists must repeatedly answer: Sample statistics (eg. s) provide point estimates of population parameters (ex. But every randomly selected sample of size n from the population results in slightly different values of the sample statistics. We estimate the reliability of a sample statistic by setting confidence intervals to it. It is associated with a degree of confidence, which is a measure of how probable it is that our interval includes the population parameter degree of freedom (1-a) = ex. D. with 95% confidence, the mean body tem is between 36. 27 and 36. 51. If we took many diff samples, each of size n= 108 from the population of all healthy adults. We constructed a ci estimate for each of these many samples, each with a = Then 95% of those ci"s would actually contain the value of the population mean.
