Measurement and Results - Coverage factor k = 2

It is common practice to express the statistical uncertainty associated with a value in the form of a confidence level. In the case of Inorganic Ventures certified values, the coverage factor k = 2 is chosen as it defines a confidence level of approximately 95%. When the data represent a normal distribution, the k factor reflects the number of standard deviations used when calculating a confidence level; for example, k = 1 represents an uncertainty of 1 standard deviation and approximately a 68% confidence level, k = 2 represents an uncertainty of 2 standard deviations and approximately a 95% confidence level, k = 3 represents an uncertainty of 3 standard deviations and approximately a 99% confidence level, etc.