M1

Question 1

Define valid data

Answer 1

Data is valid if the experimental design allows the question to be answered and the procedures and instruments are suitable. A valid conclusion must be supported by valid data, collected under the specified conditions.

Question 2

Define fiducial mark

Answer 2

A fiducial mark is an object place in the field of view for the observer to use as a point of reference.

Question 3

Define anomalies

Answer 3

Anomalies are data points that do not fit the overall trend in the data.

Question 4

Define ambiguous numbers

Answer 4

numbers written with one or more zeros at the end of the number that has no decimal point. In other words it is not possible to state with certainty how many significant figures a number has.

Question 5

Define a margin of error

Answer 5

A margin of error shows the range within which value lies.