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11 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Distribution |
A way to describe the structure of a particular data set or population |
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Frequency distribution |
A display of the values that occur in a data set and how often each value, or range of values, occurs. |
Typically between 5 and 20 classes |
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Frequencies (f) |
The numbers of data values in the categories of a frequency distribution |
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Class |
Category of data in a frequency distribution |
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Class width |
The difference between the lower limits or upper limits of two consecutive classes of a frequency distribution |
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Lower class limit |
The smallest number that can belong to a particular class |
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Upper class limit |
The largest number that can belong to a particular class |
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Constructing a frequency distribution |
1- Decide hoe many classes should be in distribution. 2- Chose an appropriate class width. 3- Find class limits. 4- Add class width to find lower limit of second class. Continue pattern. 5- Determine the frequency of each class. |
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Class boundaries |
The numbers that separate classes without forming gaps between them. |
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Relative frequency |
The fraction or percentage of the data set that falls into a particular class |
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Cumulative frequency |
The sum of the frequencies of a given class and all previous classes. |
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