Errors

Question 0

What is a systematic error?

Answer 0

An error that causes the measurement to always differ the same way - such as an error caused by a poorly calibrated instrument

Question 1

What is a random error?

Answer 1

An error that is equally larger than the true value as it is smaller - for example the reading error in measuring a length with a ruler

Question 2

What is interpolation?

Answer 2

The process of estimating positions between markings

Question 3

If the answer is 92.81 with an error of 0.3, how should it be stated?

Answer 3

92.8 +-0.3

Question 4

Define reliable/repeatable?

Answer 4

A result is reliable/repeatable if each test the result gives the same answer, even if it is a wrong answer.

Question 5

Define accuracy?

Answer 5

Accuracy is when the average of repeats is very close to the true value.

Question 6

Define precision?

Answer 6

Precision is the degree of accuracy used - minutes are more accurate than hours, therefore they are more precise.