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Unit 7 - Mr. Hunt
Statistics and Comparing Populations
| Term | Definition |
|---|---|
| sample size | a small amount of something selected at random from the whole that shows what the whole looks like |
| statistics | the study of data: how to collect, summarize, and present it |
| survey | to gather information by individual samples so as to learn about the whole thing |
| biased sample | an small amount of something that does not fairly represent the whole |
| inferences | the process of reaching a conclusion about something from known facts or evidence |
| data | a collection of facts, such as numbers, words, measurements, observations, or even just descriptions of things |
| hypothesis | a statement that might be true, which can then be tested |
| population | the whole group from which a sample is taken |
| random sampling | a selection that is chosen randomly |
| mean | a measure of center that is found by dividing the sum of the data by the number of numbers in the data |
| range | a measure of variability that is found by subtracting the minimum from the maximum in a set of data |
| MAD | a measure of variability that is found by taking the mean of the all the absolute value deviations of a set of data. |
| median | a measure of center that is found by looking at the middle number when the data is ordered from least to greatest |
| minimum | the smallest piece of data |
| maximum | the largest piece of data |
Created by:
mrhunt
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