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Organization of Data Frequency Tables

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Organization of DataFrequency Tables

2.2

- Keeps track of the number of times an outcome occurs.
- Ordering the data first makes a frequency table easier
- Tally marks can be used

- Test Scores
- 82 75 55 98 84 76 57
- 75 92 98 82 82 55 98
- 75 98 55 74 66 57 98

- A Frequency Table where the values fall into classes.
- Lower class limit – the smallest number in a class.
- Upper class limit – The largest number is a class.
- Class width- The size of the class.
- Class midpoint – The midpoint of the class. (upper + lower)/2
- Relative Frequency – Expressed as a percent.

- Test Scores
- 82 75 55 98 84 76 57
- 75 92 98 82 82 55 98
- 75 98 55 74 66 57 98