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14 Cards in this Set
- Front
- Back
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Bar Chart |
a diagram in which the numerical values of variables are represented by the height or length of lines or rectangles of equal width. |
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Skewed Left |
when the tail of distribution is on the left. |
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skewed right |
when the tail of the distribution is on the right. |
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bell |
a bell-shaped curve showing a particular distribution of probability over the values of a random variable. |
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permutation |
a action of changing the arrangement, especially the linear order, of a set of items. |
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combinations |
a way of selecting several things out of a larger group, where order does not matter. |
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z-score |
indicates how many standard deviations an element is from the mean. |
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empirical rule |
also know as the three-sigma rule or the 68-95-99.7 |
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mutually exclusive |
two or more events that cannot occur simultaneously. |
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statistics |
a fact or piece of data from a study of a large quantity of numerical data. |
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cluster sample |
the total population is divided into these groups (clusters) and simple random sample of the groups is selected. |
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stratified sample |
with stratified sampling, the researcher divides the population into separate groups, called strata. Then, a probability sample is drawn from several advantages. |
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systematic sample |
sampling method in which sample members from a larger population are selected according to a random starting point and a fixed periodic interval. |
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random sample |
a sampling method in which all members of a group have an equal and independent chance of being selected. |
