Eduqas A-Level Biology practical and mathematical skills overview quiz quiz

As Pass or Not classified, separate from the grade

As a percentage that is added directly on to the numerical A-level grade awarded for the papers

As a letter grade A to E

It is not reported at all

Control all of the other variables so that only the chosen independent variable is allowed to change

Repeat the measurements and take a mean

Use the most expensive apparatus

Change two variables at once

2 micrometres

200 micrometres

20 micrometres

0.2 micrometres

It increases

It stays the same

It becomes zero

It decreases

60 percent

30 percent

37.5 percent

160 percent

Random error, which scatters readings unpredictably above and below the true value

Systematic error

Human error

Zero error only

A t-test

Spearman's rank correlation

The chi-squared test

Standard deviation

The difference between observed and expected is significant, so the null hypothesis must be rejected

The experiment must be repeated

The expected ratio was wrong

The difference is not significant; accept the null hypothesis

A third factor may affect both variables

Correlations calculated from biological data are always wrong and so can never be trusted at all

Correlation only applies to genetics

Causation needs no evidence

AO1 (knowledge and understanding)

AO2 (application)

AO3 (analysis and evaluation)

They are all equal

By counting up the separate marking points only, awarding one mark for each correct fact stated

By spelling and grammar only

By levels of response, rewarding a sustained, linked argument

By the length of the answer

A noticeably longer answer that covers more separate points than a Describe answer would

A diagram

A calculation

Reasons or a mechanism (why or how)