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Definition
| science of collecting, analyzing, and drawing conclusions from data |
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| entire collection of individuals about which information is desired |
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| section selected from the population for study |
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| characteristic of a population |
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Definition
| quantity computed from values in a sample |
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Definition
| information that can be counted or measured numerically |
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Definition
| information that describes the attributes or properties that an object possesses |
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Definition
| numerical data where the values are isolated points on the number line |
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| numerical data where the values form an entire interval on the number line |
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| survey where those being asked the questions are given the option of answering them or not |
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| a type of study where individuals are observed or certain outcomes are measured |
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| a study where the investigator observes how a variable behaves when the researcher manipulates one or more variables |
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| a variable that is both related to group membership and the response variable of interest in a research study |
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Definition
| a variable that is both related to group membership and the response variable of interest in a research study |
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Definition
| sample cosen using a method that ensures that each different possible sample of the desired size has an equal chance of being chosen |
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Definition
| separate random samples are independently chosen from each subgroup (when the population has been separated into subgroups) |
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Definition
| a value k is chosen and the kth person is chosen and every kth individual is chosen (used when the population consists of a list or sequential arrangement) |
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Definition
| dividing the population into non overlapping subgroups and then choosing the clusters at random |
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Definition
| using an easily available or convenient group to form a sample |
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Definition
| either the person giving the pill know who gets which pill and the person receiving the pill does not know or vice versa |
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Definition
| neither person knows who is receiving the pill |
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Term
| nominal level of measurement |
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Definition
| classifying cases in unordered groups |
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| ordinal level of measurement |
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Definition
| classifying cases in ordered groups but the distance between the groups may vary |
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| interval level of measurement |
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| classifying cases in ordered groups but the distance between the groups may vary |
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| ratio level of measurement |
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Definition
| groups where there is a natural 0 point |
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Term
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Definition
| made up by methods for organizing and summarizing data |
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