Subject Specific Vocab

Question 1

Define accuracy

Answer 1

A measurement result is considered accurate if it is judged to be close to the true value.

Question 2

Define True Value

Answer 2

This is the value that would be obtained in an ideal measurement

Question 3

Define Anomalies

Answer 3

These are values in a set of results which are judged not to be part of the variation caused by random uncertainty.

Question 4

Define Precision

Answer 4

Precise measurements are ones in which there is very little spread about the mean value.

Question 5

Define Resolution

Answer 5

This is the smallest change in the quantity being measured (input) of a measuring instrument that gives a perceptible change in the reading.

Question 6

Define Repeatable

Answer 6

A measurement is repeatable if the original experimenter repeats the investigation using same method and equipment and obtains the same results.

Question 7

Define Validity

Answer 7

Suitability of the investigative procedure to answer the question being asked. For example, an investigation to find out if the rate of a chemical reaction depended upon the concentration of one of the reactants would not be a valid procedure if the temperature of the reactants was not controlled

Question 8

Define Reproducible

Answer 8

If someone else does the experiment, or a different method or piece of equipment is used, the results will be similar.