Experiment key words

To get the most PRECISE results we could...

• record mass without decimal places.

• record mass to one decimal place.

• record mass to two decimal places.

• record mass to three decimal places.

To get the very RELIABLE results we should...

• only repeat he experiment many times.

• only compare our results with others who did the same experiment.

• only ignore anomalies or strange results.

• do all of these things!

To get VALID results we should...

• control as many variables as possible.

• measure as many variables as possible.

• change as many variables as possible.

• do all of these things!

Precise means...

• to measure what you want to measure.

• to get results which can be repeated by others.

• to get close to the true value of something.

• to be close to the truth.

Reliable means...

• to measure what you want to measure.

• to get results which can be repeated by others.

• to get close to the true value of something.

• to be close to the truth.

Valid means...

• to measure what you want to measure.

• to get results which can be repeated by others.

• to get close to the true value of something.

• to be close to the truth.

Accurate means...

• to measure what you want to measure.

• to get results which can be repeated by others.

• to get close to the true value of something.

• to be close to the truth.

In an experiment the control variables are things you...

• change and compare.

• measure.

• keep the same.

• ignore.

In an experiment the independent variables is the thing that you...

• change and compare.

• measure.

• keep the same.

• ignore.

In an experiment the dependent variables is the thing that you...

• change and compare.

• measure.

• keep the same.

• ignore.