Biochemistry 2280A Study Guide - Midterm Guide: Simple Random Sample, Statistical Parameter, Sampling Error

• School: Western University
• Department: Biochemistry
• Course: Biochemistry 2280A
• Professor: Beth Mac Dougall- Shackleton

Document Summary

Understand what the discipline of statistics covers (i. e. a method for planning studies, obtaining data, summarizing, interpreting ); Plan a method for sample or study design, making sure it is a good sample, obtain data, summarize, and interpret. Describe characteristics associated with good samples (i. e. representative, unbiased, large sample size); Large sample size, representative of entire population. Doesn"t include poor sampling techniques like convenience, voluntary response, or mall. Define and apply vocabulary associated with sampling (e. g. statistic, unit, sample, sampling error, etc. Statistic: a piece of data obtained from a sample that represents the parameter of the population. Unit: one member of the population or sample. Sample: a portion of the population which data is obtained from. Sampling error: due to chance, there may be sampling error that results in statistics that do not represent the true population. Nothing we can do to avoid, still valid if sample is representative. Identify novel situations where selection bias may be present;