PERCENTAGES
How important are they?
An understanding of percentages is probably the first and most important concept to understand in statistics!
How easy are they to understand?
Percentages are easy to understand.
When are they used?
Percentages are mainly used in the tabulation of data in order to give the reader a scale on which to assess or compare the data.
What do they mean?
“Per cent” means per hundred, so a percentage describes a proportion of 100. For example 50% is 50 out of 100, or as a fraction 1⁄2. Other common percentages are 25% (25 out of 100 or 1⁄4), 75% (75 out of 100 or 3⁄4).
To calculate a percentage, divide the number of items or patients in the category by the total number in the group and multiply by 100.
How important are they?
An understanding of percentages is probably the first and most important concept to understand in statistics!
How easy are they to understand?
Percentages are easy to understand.
When are they used?
Percentages are mainly used in the tabulation of data in order to give the reader a scale on which to assess or compare the data.
What do they mean?
“Per cent” means per hundred, so a percentage describes a proportion of 100. For example 50% is 50 out of 100, or as a fraction 1⁄2. Other common percentages are 25% (25 out of 100 or 1⁄4), 75% (75 out of 100 or 3⁄4).
To calculate a percentage, divide the number of items or patients in the category by the total number in the group and multiply by 100.
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