technical and experimental terminology

Question 1

precision definition

Answer 1

having all your values close to EACH OTHER

Question 2

accuracy definition

Answer 2

having all your values close to the TRUE VALUE

Question 3

validity definition

Answer 3

how accurate a measure is - whether it represents what it is supposed to measure

Question 4

reliability definition

Answer 4

how consistent a measurement is - whether it can be reproduced under the same conditions

Question 5

repeatability definition

Answer 5

whether the original experimenter can repeat the experiment with the same set up and conditions and get the same results

Question 6

reproducibility definition

Answer 6

whether another team of scientists can repeat the experiment with the same set up and conditions and get the same results

Question 7

what is the point of a centrifuge

Answer 7

separates heterogenous mixtures into individual components - solids, liquids, etc
it works by rotating rapidly and creating strong centripetal force that separates the mixture