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Matt's Stack
Statistics Vocabulary
Question | Answer |
---|---|
Method actively seeking to poll people from many different backgrounds. The population is first divided into different categories (or strata) and the number of members in each category is determined | Stratified Samples |
The sample ends up with one or more sub-groups that are either over-represented or under-represented. | Biased Samples |
The practice of polling only those who you believe will support your cause. | Cherry Picking |
A survey that is simply handed out gains a few responses when compared to the number of surveys given out. | Non-response Bias |
Respondents who tend to have stronger opinions on subjects that others and are more motivated to respond may also cause bias. | Self-selected Sample |
What the survey represents | Population |
A personal interview conducted by an interviewer | Face to face Interviews |
Data that is placed in intervals | Grouped Data |
Data that is listed | Ungrouped Data |
Displays data in an organized way | Frequency distribution table |
Mean, median, and mode | Measure of central tendency |
method which people are chosen out of the blue | Random samples |
answer questions on a questionnaire rather than having an interviewer. s-a | Self-administered surveys |