# How to Calculate the Value of a Given Percentage?

A percent equals the part divided by the whole. So, with percentages you are looking at just part of a value. In order to find the value of a given percentage, you need to know the whole number you... Read More »
http://www.ehow.com/how_8380347_calculate-value-given-percentage.html

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## How to Calculate Sensitivity, Specificity, Positive Predictive Value, and Negative Predictive Value?

For any given test administered to a given population, it is important to calculate the sensitivity[1], specificity[2], positive predictive value[3], and negative predictive value[4], in order to d... Read More »
http://www.wikihow.com/Calculate-Sensitivity%2C-Specificity%2C-Positive-Predictive-Valu...

## How Do You Find the Percentage Value of a Number?

The word percent means "per hundred" and is a way of expressing things as a fraction of 100. For example, 50 percent means "50 per 100." So if fifty percent of people voted for a certain amendment,... Read More »
http://www.ehow.com/how_6560156_do-percentage-value-number_.html

## How to Write an Exponential Function Given a Rate and an Initial Value?

Exponential functions can model the rate of change of many situations, including population growth, radioactive decay, bacterial growth, compound interest, and much more. Follow these steps to writ... Read More »
http://www.wikihow.com/Write-an-Exponential-Function-Given-a-Rate-and-an-Initial-Value

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