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Mr. York's statistic

MWF 2:30-3:20

Population A group that is being surveyed.
Stratified Sampling A method actively seeking to poll people from many different backgrounds.
Biased Sample A sample that ends up with one or more sub-groups that are either over-represented or under-represented, doesn't include the entire population.
Cherry Picking The practice of polling only those who you think believe will support your cause.
Non-Response Bias A survey that is simply handed out gains few responses when compared to the number of surveys given out.
Self-Selected Respondents who tend to have stronger opinions on subjects than others and are more motivated to respond. Generally regarded as unscientific.
Face To Face Interview -Fewer Misunderstood Questions -High Response Rate -Additional information can be collected from respondents -Time Consuming -Expensive -Can be biased upon the attitude or the appearance of the surveyor
Self-Administered Surveys -Respondents can complete on his or her free time -Less expensive than face-to-face interviews -Anonymity causes more honest results -Lower response rate
Random Samples 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. It is important that each person in the population has a chance of being picked.
Measure of Central Tendency The mean, median, mode of a sample.
Frequency Distribution Table Often used when a data set is large, easy to read and interpret.
Ungrouped Data Data that is listed on a frequency distribution table.
Grouped Data Data that is placed in intervals.
Created by: 100001444249765