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Details Title: Statistics Vocabulary ch1 Description: concept study Total Flash Cards: 16 Created: 03/06/2006 13:09:55	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term measurement error Definition refers to inaccuracies in the values of the data recorded. In surveys,the error may be due to ambiguous or leading questions and the interviewer's effect on the respondent Term nonresponse bias Definition results when the researchers conducting a survey or study are unable to obtain data on all experimental units selected for the sample Term selection bias Definition results when a subset of the experimental units in the population is excluded so that these units have no chance of being selected in the sample Term statistical thinking Definition involves applying rational thought and the science of statistics to critically assess data and inferences Term representative sample Definition exhibits characteristics typical of those possessed by the target population Term qualitative data Definition measurements that cannot be measured on a natural numerical scale; they can only be classified into one of a group of categories Term quantitative data Definition measurements that are recorded on a naturally occurrintg numerical scale Term measure of reliability Definition a statement (usually quantified) about the degree of uncertainty associated with a statistical inference Term statistical inference Definition an estimate, prediction, or some other generalization about a population based on information contained in a sample Term sample Definition a subset of units of a population Term variable Definition a characteristic or property of an individual population unit Term experimental unit Definition an object (e.g., person, thing, transaction, or event) upon which we collect data Term inferential statistics Definition utilizes sample data to make estimates, decisions, predictions, or other generalizations about a larger set of data Term descriptive statistics Definition utilizes numerical and graphical methods to looks for patterns in a data set, to summarize the information revealed in a data set, and to present that information in a convenient form Term statistics Definition the science of data. This involves collecting, classifying, summarizing, organizing, analyzing, and interpreting numerical information. Term random sample Definition a sample of 'n' experimental units selected from the population in such a way that every different sample of size 'n' has an equal chance of selection