Term
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Definition
| number or nonnumerical labels collected from a set of entities |
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Term
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Definition
| the value in the middle when the numbers are put in order |
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Term
| Lower quartile and Upper quartile |
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Definition
| the medians of the lower and upper halves of the data |
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Term
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Definition
| the number of times it occurs per number of opportunities (3 out of 5 or 3/5) |
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Term
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Definition
| estimated by using the past rate for that outcome |
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Term
| Base rate or Baseline Risk |
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Definition
| the rate or risk at a beginning time period or under specific conditions |
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Term
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Definition
| a collection of all individuals about which information is desired |
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Term
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Definition
| a subset of the population selected so that every individual has a specified probability of being part of the sample |
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Term
| Margin of Error aka Margin of sampling error |
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Definition
| a number that is added and subtracted from the sample information to produce an interval that is 95% certain to contain the true value for the population |
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Term
| Non-participation bias AKA non-response bias |
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Definition
| occurs when many people are selected for the sample either do not respond at all or do not respond to some of the key questions |
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Term
| Self-selected or Volunteer sample |
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Definition
| surveys and polls that don't attempt to contact a random sample, they just ask anyone who wants to respond to do it |
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Term
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Definition
| participants are merely observed and measured |
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Term
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Definition
| a characteristic that differs from individual to the next |
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Term
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Definition
| a variable that is not the main concern of the study but may be partially responsible for the results |
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Term
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Definition
| a study in which treatments are randomly assigned to participants |
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Term
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Definition
| a specific regimen or procedure assigned to participants by the experimenter |
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Term
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Definition
| each participant has a specified probability of being assigned to each treatment |
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Term
| Multiple testing or Multiple comparison |
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Definition
| when researchers test many different hypotheses in the same study |
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Term
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Definition
| a collection of procedures and principles for gathering data and analyzing information to help people make decisions when faced with uncertainty |
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