Differentiate between accuracy and precision.

Explain the important elements of measurements.

Discuss the relationship between accuracy and cost.

Accuracy is defined as

$($a$)$ a measure of how often an experimental value can be repeated

$($b$)$ the closeness of a measured value to the real value

$($c$)$ the number of significant figures used in a measurement

$($d$)$ none of these

Random errors can be assessed

$($a$)$ experimentally

$($b$)$ by performing sensitivity analysis

$($c$)$ statistically

$($d$)$ empirically

Systematic errors are

$($a$)$ controllable errors

$($b$)$ random errors

$($c$)$ uncontrollable errors

$($d$)$ none of these