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7 Cards in this Set
- Front
- Back
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descriptive statistics |
numerical data used to measure and describe characteristics of groups. Includes measures of central tendency and measures of variation |
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histogram |
a bar graph depicting a frequency distribution |
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skewed distribution |
a representation of scores that lack symmetry around their average value (the skew is the few) |
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standard deviation |
a computed measure of how much scores vary around the mean score |
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normal curve (normal distribution) |
a symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean (about 68% fall within one standard deviation of it) and fewer and fewer near the extremes |
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inferential statistics |
numerical data that allow one to generalize- to infer from sample data the probability of something being true of a population |
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statistical significance |
a statistical statement of how likely it is that an obtained result occurred by chance |
