experiments

Question 1

accuracy

Answer 1

how close the measurements are to the true value
-affected by systematic errors

Question 2

precision

Answer 2

how close the measured values are to each other
-affected by random errors

Question 3

random error

Answer 3

can be minimized by repeating experiment multiple times

Question 4

systematic error

Answer 4

reduced by calibrating apparatus

Question 5

bias

Answer 5

gap between the average of repeated experiments and the data including systematic errors
-reduced by minimizing systematic and random errors

Question 6

reliability

Answer 6

depends on/ improved by repetition, reproducibility, precision, appropriate data analysis

Question 7

validity

Answer 7

does the experiment serve its aim, reflected by accuracy

Question 8

How to increase reliability

Answer 8

A large Sample size will is effectively multiple repeats

Question 9

IV and DV in a rate of reaction experiment

Answer 9

IV : temperature , reactant conc, pressure, catalyst, SA
DV : Always has to relate to time = product produced per unit time