Contents
What is a multiplicative error?
Statistical Glossary A multiplicative error is proportional to the true value of the quantity being measured. An example of a multiplicative error is when electronic scales provide readings 1% higher than the true weight – i.e. 1.01 kg for 1.0 kg standard weight, 2.02 kg for a 2.0 kg standard weight, etc.
What is an additive error?
Additive error is the error that is added to the true value and does not depend on the true value itself. In other words, the result of the measurement is considered as a sum of the true value and the additive error: where.
What are additive and proportional errors?
Additive or proportional errors: Additive error does not depend on constituent present in the determination e.g. loss in weight of a crucible in which a precipitate is ignited. Proportional error depends on the amount of the constituent e.g. impurities in standard compound.
What is personal error?
Personal error refers to faults introduced as a result of the observer’s fault, such as carelessness in taking observations, and so on. Random error refers to errors that occur as a result of variations in the settings under which an experiment is conducted.
What is proportional error give example?
Proportional errors decrease or increase in proportion to the size of the sample. If the sample size is doubled, for example, the amount of iodine liberated by both the copper and the iron contaminant is also doubled.
Can error be subtracted?
In words, this says that the error in the result of an addition or subtraction is the square root of the sum of the squares of the errors in the quantities being added or subtracted.
What is erratic error?
Like its linguistic relative, error, the adjective erratic means “deviating from the norm,” or “wrong.” It also implies behavior or qualities that are unpredictable or odd. The word comes from the Latin verb errare, or “to wander” off course.