EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which causes an error in an analysis by enhancing or attenuating (making smaller) the quantity being measured?
A
improper use of units
B
improper handling
C
poor reading
D
interference
Explanation: 

Detailed explanation-1: -An interference or interferent is a species that causes an error in an analysis by enhancing or attenuating (making smaller) the quantity being measured.

Detailed explanation-2: -Instrument problems, dilution errors, transcription errors in reporting and incorrect calibration are among the leading causes of poor results in clinical analysis too.

Detailed explanation-3: -In any measurement, there are two types of errors: determinate and indeterminate. Errors that cause the measured mean value (x bar) for any series of measurements to be displaced, in one particular direction by one particular amount, from the true mean value (µ).

Detailed explanation-4: -Three general types of errors occur in lab measurements: random error, systematic error, and gross errors.

Detailed explanation-5: -1) error refers to the difference between a measured value and the “true” or “known” value. 2) error often denotes the estimated uncertainty in a measurement or experiment. Every measurement is influenced by many uncertainties, which combine to produce a scatter of results.

There is 1 question to complete.