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6.11
Statistics Review
Term | Definition |
---|---|
Mean | the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores |
Median of a set of numbers | the middle score in a distribution; half the scores are above it and half are below it If there are two numbers, add them and divide by two |
Mode | the most frequently occurring score(s) in a distribution |
Range | the difference between the highest and lowest scores in a distribution |
Dot Plot | a graphical device that summarizes data by the number of dots above each data value on the horizontal axis |
Population | The entire group |
Maximum | Largest number |
minimum | smallest number |
measures of center | summarizes date by providing a central piece of data |
random sample | everyone in the population must have an equal chance of being selected |
statistical question | does not have a yes or no answer |