Flashcards
statistic ch.2 (frequency distribution and graphs)
Cards in this deck (10)
- 1Organizing Data-Raw Datadata collected in original form.
- 2Frequencynumber of values in a specific class of
the distribution. - 3Frequency Distributiontable format
--> Grouped & ungrouped frequency distributions, Categorical frequency distribution - 4Categorical frequency distributionnominal or ordinal data
Eg. blood types, grades - 5Table of categorical frequency distributionClass
Tally - 6Grouped frequency distributionsnumeric data ( height weight)
--> Class limits, Class
boundaries, Class
midpoint, Tally, Frequency, Cumulative
frequency - 7classraw data value is placed into a category
- 8Rules for constructing frequency distribution1. There should be between 5 and 20 classes.
2. The classes must be mutually exclusive.
(i.e. no overlapping classes)
3. The classes must be continuous.
(i.e. no gaps between classes)
4. The classes must be exhaustive.
(i.e. cover all data values in the data set)
5. The classes must be equal in width. - 9Ungrouped frequency distributions anumerical data when the range of data is small.
each class corresponds to exactly one data value - 10—
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- Elementary statistic (statistic ch.2 (frequency distribution and graphs)) Flashcards on statistic ch.2 (frequency distribution and graphs), created by katy` kim on 01/02/2018.
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