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Bias measures how far your observed value is from a target value. Determine bias by a reference value or estimate from outside sources such as proficiency testing results or the Bio-Rad Unity™ Interlaboratory Program. Express bias as a percentage. Use the following formula to calculate bias:

See Also

Useful Statistics


Standard Deviation (SD)

Calculating a Control Mean and Range

Standard Deviation Index (SDI)

Coefficient of Variation (CV)

Determining an Acceptable CV

Coefficient of Variation Ratio (CVR)

Total Error (TE) and Total Allowable Error (TEa)