Math 120 Statistics Questions With Verified Answers 2024

(Experimental) unit, subject, participant - correct answer--1)a unit of observation or measurement for which data are collected or derived 2) Test subjects randomly assigned to receive the experimental treatment 3) a person who is involved in an activity or event Alternative Hypothesis - correct answer--states there is a statistically significant relationship between two variables Binomial Random Variable - correct answer--only two possible outcomes (answers) Categorical (ordinal) Variable - correct answer--take on values that are names or labels. The color of a ball (e.g., red) Census - correct answer--a count of the entire population Confidence Interval - correct answer--a range of values so defined that there is a specified probability that the value of a parameter lies within it. Confounding Variable - correct answer--something else explains the outcome Convenience (or haphazard) sample - correct answer--is made up of people who are easy to reach Descriptive Statistics - correct answer--coefficients that summarize a given data set, which can be either a representation of the entire or a sample of a population. Explanatory Variable - correct answer--is the focus of a question in a study or experiment. Frequency Distribution - correct answer--a mathematical function showing the number of instances in which a variable takes each of its possible values. Inferential Statistics - correct answer--allows you to make predictions ("inferences") from that data Nonparticipation (Nonresponse) Bias - correct answer--those selected to participate choose not to do so or can't be reached Null Hypothesis - correct answer--there is no statistical significance between the two variables (usually the hypothesis a researcher or experimenter will try to disprove or discredit