Biology 2244A/B Study Guide - Bias Of An Estimator, Binomial Distribution, Confidence Interval
22 Nov 2012
School
Department
Course
Professor
Document Summary
Major applications of inferential statistics involve the use of sample data: estimate value of a population parameter, test some claim (hypothesis) on a population. Requirements for using a normal distribution as an approximation to a binomial. Distribution: sample is a srs, conditions for binomial distribution are satisfied. Fixed number of trials, independent trials, two categories of outcomes, probabilities remain constant through the trials: normal distribution can be used approximate the distribution because np 5 and nq 5. Though discussions involve proportions, they can be applied to probabilities or percentages: percentages must be converted into proportions. Point estimate: single value used to approximate a population parameter: sample proportion is the best point estimate of the population proportion. Round off rule: round ci limits for p to three significant digits. December 28th, 2011: evaluate margin of error, substitute the calculated and/or given values in a general format for the ci, round off if necessary.
