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Statistics Vocab

All people or items with the characteristic(s) one wishes to observe Population
A 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 Sample
If the sample ends up with one or more sub-groups that are either over-represented or under-represented. Biased Sample
The practice of polling only those who you believe will support your cause. Cherry Picking
A survey that is simply handed out gains few responses when compared to the number of surveys given out. Non-response Bias
Respondents who tend to have stronger opinions on subjects than others and are more motivated to respond may also cause bias. Self-selected Sample
One way in which a survey/interview can be conducted in which the people must meet. Face-to-face Interviews
One way in which a survey/interview can be conducted in which the person being questioned can take the papers home and finish them -keeping that person anonymous, which instills honesty. Self-administered Surveys
A method in which people are chosen “out of the blue.” In a true random sample, everyone in the population must have the same chance of being chosen. Random Sample
Mean, Median, and Mode Measure of Central Tendency
When a data set is large, this is often used to display the data in an organized way that lists the data values as well as the number of times each value appears in the data set. Frequency Distribution Table
Data that is listed Ungrouped Data
Data that is placed in intervals Grouped Data
Created by: MichaelaShort