The H.C.f of 2/3, 8/9, 64/81, and 10/27
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What is a Frequency Distribution Table?
How to make a Frequency Distribution Table Examples:
Using Tally Marks
Including Classes (with video)
See also: Frequency Distribution Table in Excel
What is a Frequency Distribution Table?
Frequency tells you how often something happened. The frequency of an observation tells you the number of times the observation occurs in the data. For example, in the following list of numbers, the frequency of the number 9 is 5 (because it occurs 5 times):
1, 2, 3, 4, 6, 9, 9, 8, 5, 1, 1, 9, 9, 0, 6, 9.
Tables can show either categorical variables (sometimes called qualitative variables) or quantitative variables (sometimes called numeric variables). You can think of categorical variables as categories (like eye color or brand of dog food) and quantitative variables as numbers.
If you aren’t quite sure of the difference, see: Qualitative or quantitative? How to tell.
The following table shows what family planning methods were used by teens in Kweneng, West Botswana. The left column shows the categorical variable (Method) and the right column is the frequency — the number of teens using that particular method (image courtesy of KSU).
A frequency distribution table showing categorical variables.
A frequency distribution table showing categorical variables.
Frequency distribution tables give you a snapshot of the data to allow you to find patterns. A quick look at the above frequency distribution table tells you the majority of teens don’t use any birth control at all.
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How to make a Frequency Distribution Table: Examples
Example 1
Tally marks are often used to make a frequency distribution table. For example, let’s say you survey a number of households and find out how many pets they own. The results are 3, 0, 1, 4, 4, 1, 2, 0, 2, 2, 0, 2, 0, 1, 3, 1, 2, 1, 1, 3. Looking at that string of numbers boggles the eye; a frequency distribution table will make the data easier to understand.
Steps
To make the frequency distribution table, first write the categories in one column (number of pets):
frequency distribution table 3