Chapter 9. The Basics of Experimentation and Testing for a Difference Between Means Name: Class: Date: From Kiess and Green’s Statistical Concepts for the Behavioral Sciences , 4/eAssignment 9.1 The purpose of this assignment is to help you to become more comfortable in recognizing what each statistical symbol and formula in Chapter 9 represents. For each item in the table below, either the term or the definition is given. Complete the table with the missing information. For example, for the between-subjects design, write the definition in the appropriate column. It is best to complete this page without looking at your notes or textbook. Once you have completed it, refer back to your notes and textbook to verify you are correct. Term Definition Between-subjects design Within-subjects design The probability of failing to find a statistically significant difference when one is actually there Obtaining subjects from among people who are accessible or convenient to the researcher Extraneous variables The amount a sample mean differs from its population mean Confound Groups in which the subjects are not expected to differ in any systematic or consistent way Alternative hypothesis Standard deviation of a theoretical sampling distribution of 12XX−Random assignment Developed for measuring the effect of the independent variable on the dependent variable Statistically significant difference
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