PSYC209 Lecture Notes - Lecture 7: Sample Size Determination, Effect Size, Standard Deviation

• School: University of Delaware
• Department: Psychology
• Course: PSYC209
• Professor: Amey Rachel

Document Summary

Hypothesis: statement or proposed explanation for an observation that can be tested using the research method, a hypothesis is often a statement about the value for a parameter in a population. On average, the value of the sample mean will equal that of the population mean. The larger the difference or discrepancy between the sample mean and population mean, the less likely it will be that the value of the population mean we hypothesized is correct. Hypothesis testing: a statistical procedure that uses sample data to evaluate a hypothesis about a population, one of the most commonly used inferential procedures. Hypothesis: a statement or proposed explanation for an observation that can be tested using the research method. Based on the hypothesis, predict the expected characteristics of the sample. Obtain a random sample from the population. Compare the obtained sample data with the prediction made from the hypothesis.