reliability Flashcards
what is variation due to?
Variation in experimental results may be due to the reliability of measurement methods and/or inherent variation in the specimens
what is the purpose of repeated measurements?
The reliability of measuring instruments or procedures can be determined
by repeated measurements or readings of an individual datum point.
what does variation indicate?
The variation observed indicates the precision of the measurement instrument or procedure but not necessarily its accuracy.
what is natural variation used for?
The natural variation in the biological material being used can be determined by measuring a sample of individuals from the population
what does the mean indicate?
The mean of these repeated measurements will give an indication of the true value being measured
what is the range of values?
The range of values is a measure of the extent of variation in the results If there is a narrow range then the variation is low
what is independant replication?
Independent replication should be carried out to produce independent data sets
when can results be considered reliable?
Overall results can only be considered reliable if they can be achieved consistently.
what should be compared?
These independent data sets should be compared to determine the reliability of the results
