PSYC 1010 Chapter Notes - Chapter 8: Standard Deviation, Microsoft Excel, Type I And Type Ii Errors
Document Summary
Chapter 8- confidence intervals, effect size, and statistical power. An interval estimate, based on the sample statistic, that includes the population mean a certain percentage of the time- were we to sample from the same population repeatedly. Centered around the mean of the sample. Point estimate- a summary statistic from a sample that is just one number used as an estimate of the population parameter. Interval estimates- based on a sample statistic and provides a range of plausible values for the population parameter. We can use a sample to calculate a point estimate (one number such as mean, for our population) or to calculate an interval estimate (a range of plausible numbers, such as range of means, for our population) Draw a picture of a distribution that will include the confidence interval. Draw a normal curve with the sample mean in the center. Indicate the bounds of the confidence interval on the drawing.
