PSYCH 210 Exams Questions with Complete Solutions

Two branches of stats - Answers-Descriptive, inferential Descriptive stats - Answers-organize and summarize data Inferential Stats - Answers-uses sample data to make general estimates about large population sample - Answers-set observations from population of intrest population - Answers-all possible observations Variables - Answers-observations of physical attitudinal or behavioral characteristics Discrete observations - Answers-can take on only specific values (e.g. whole numbers); no other values can exist between these numbers Types of discrete observations - Answers-nominal and ordinal Nominal - Answers-existing in name only Ordinal - Answers-being of a specified position or order in a numbered series Continuous observation - Answers-can take on a full range of values (e.g., numbers out to several decimal places); an infinite number of potential values exists Types of continuous observation - Answers-interval, ratio Interval - Answers-#s as values , distance between # Ratio - Answers-meet criteria for interval but has significant 0 points scale variable - Answers-a variable that meets the criteria for an interval variable or a ratio variable levels - Answers-discrete values/conditions variables can be independent variable - Answers-The experimental factor that is manipulated; the variable whose effect is being studied. dependent variable - Answers-The outcome factor; the variable that may change in response to manipulations of the independent variable.