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Chapter 1.1 Definitions Flashcards

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2567914917StatisticsIs the science of collecting, organizing, summarizing, and analyzing information to draw conclusions or answer questions. In addition, statistics is about providing a measure of confidence in any conclusions0
2567920766PopulationThe entire group to be studied1
2567920767IndividualIs a person or object that is a member of the population being studied2
2567922051SampleA sample is a subset of the population that is being studied.3
2567924767StatisticA numerical summary of a sample4
2567978757Descriptive StatisticsConsist of organizing and summarizing data. Describe data through numerical summaries, tables, and graphs.5
2567984987Inferential StatisticsUses methods that take a result from a sample, extend it to the population, and measure the reliability of the result.6
2567989250ParameterIs a numerical summary of a population.7
2567993068QualitativeAllow for classification of individuals based on some attribute or characteristic.8
2567994877CategoricalAllow for classification of individuals based on some attribute or characteristic.9
2567996763VariablesAllow for classification of individuals based on some attribute or characteristic.10
2567996818Quantitative VariablesProvide numerical measures of individuals. The values of a quantitative variable can be added or subtracted and provide meaningful results.11
2568016665Discrete variableIs a quantitative variable that has either a finite number of possible values or a countable number of possible values.12
2568029491Continuous VariableIs a quantitative variable that has an infinite number of possible values that are NOT countable.13
2570823692A variable is at the nominal level of measurementIf the values of the variable name, label, or categorize. In addition, the naming scheme does not allow for the values of the variable to be arranged in a ranked or specific order.14
2570830999A variable is at the ordinal level of measurementif it has the properties of the nominal level of measurement, however the naming scheme allows for the values of the variable to be arranged in a ranked or specific order.15
2570834473A variable is at the interval level of measurementif it has the properties of the ordinal level of measurement and the differences in the values of the carible have meaning.16
2570837160A variable is at the ratio level of measurementif it has the properties of the interval level of measurement and the ratios of the values of the variable have meaning. Arithmetic operations such as multiplication and division can be performed on the values of the variable.17

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