Curriculum
Mathematics — First Preparatory
Unit 1: Numbers
0/10
Unit 2: Algebra
0/4
Unit 3: Statistics
0/6
Unit 4: Geometry
0/6
Text lesson
Organizing Data
Organizing Data
Common mistakes
Common mistakes
- Forgetting that the total of the frequencies equals the number of data values. If the total does not match, count again.
- Putting the value 150 into two classes. The class 140 – less than 150 does not include 150.
- Confusing frequency with relative frequency. Frequency is a number, while relative frequency is a fraction.
- Counting tally marks incorrectly. A complete group of tally marks counts as five.
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