Year 11 Prep for Practical Exam

Independent variable

• The variable you measure

• The variable you change

• The variable you keep the same

• A chemical or apparatus that could cause harm

Dependent variable

• The variable you measure

• The variable you change

• The variable you keep the same

• A chemical or apparatus that could cause harm

Control variables

• The variable you measure

• The variable you change

• The variables you keep the same

• A chemical or apparatus that could cause harm

a chemical or piece of equipment that could cause harm is

• Risk

• Hazard

• Control measure

• Repeatability

something that could be done to reduce or prevent a risk is

• a hazard

• a risk

• a control measure

• a random error

Repeatability is...

• How close your results are to another groups

• How close your results are to your own repeats

Reproducibility is...

• How close your results are to another groups

• How close your results are to your own repeats

A measurement is accurate if...

• it is close to the true value

• it is close to the mean value

A measurement is precise if...

• it is close to the true value

• it is close to the mean value

An anomaly is...

• a result that is close to the true value

• a result that does not fit the pattern

• a result that is the difference between the biggest and smallest value