CCEA Life and Health Sciences A2 1 Investigative Project overview quiz quiz

By an internally assessed portfolio of an extended investigation, moderated by CCEA

By a single terminal written examination at the end of A2

By a group presentation marked by visiting examiners

By an online multiple-choice test of practical theory

That there is a large and important effect between the groups

That there is no significant difference or no significant correlation

That the investigation has been planned correctly

That the data are completely free from any error

To show what happens without the independent variable, so differences can be attributed to it

To increase the number of repeat readings collected

To make the investigation take longer and look more thorough

To replace the need for a statistical test

To prove the hypothesis is definitely correct

To judge whether a difference or correlation is unlikely to be due to chance

To increase the resolution of the measuring apparatus

To remove all systematic errors from the data

Accept the null hypothesis, as the result is due to chance

Repeat the test until the probability rises above 0.05

Reject the null hypothesis, as the result is significant

Discard the data set and start the investigation again

Listing the hazards in a risk assessment

Measuring the resolution of an instrument

Finding the relationship between two continuous variables

Comparing a measured outcome between two groups

To give a mean and a measure of spread so the test is valid

To make the results table look fuller on the page

To remove the need for a control treatment

To guarantee the null hypothesis is rejected

After all the data have been collected and graphed

During planning, so the right data and enough repeats are collected

Only if the results look interesting

After the conclusion has been written

The hypothesis has been proven beyond all doubt

There are no errors in the investigation

The result is unlikely to be due to chance at the chosen level

The sample size does not matter

A vague suggestion to be more careful next time

Repeating the method section word for word

Leaving out any mention of errors to keep it positive

Judging reliability and validity and proposing specific improvements

It supports claims with reliable evidence and shows academic honesty

It increases the word count of the report

It replaces the need for a conclusion

It guarantees a significant statistical result

The concentration of the antimicrobial

The diameter of the zone of inhibition

The species of bacteria used

The incubation temperature of the plates

Reject the null hypothesis

Lower the significance level to 0.01

Accept the null hypothesis, as the result is not significant

Conclude the effect is certainly real

A decision to avoid using any sources

A guarantee that the hypothesis will be supported

A promise to collect only a single reading

A risk assessment of the hazards involved