# How to Calculate P Value?

P-value, or probability value, is a statistical measure that helps scientists determine if their hypotheses are correct. It is directly related to the significance level, which is an important comp... Read More »
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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 to Calculate Ad Value?

Advertising Value Equivalency, or AVE, provides the estimated cost of placing an advertisement in a given editorial space in print or television. Calculating the total cost for all your media cover... Read More »

## How to Calculate R-Value?

R-value is an experimentally determined measurement that gives an indication as to the heat loss that can be anticipated through a material. R-value is traditionally represented in either SI, Inter... Read More »
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## How to Calculate RMS Value?

Technically, the root mean square (RMS) of a variable is the square root of the average of the square of the variable. This kind of average is useful when a simpler type of averaging yields little ... Read More »
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