Validity, reliability and accuracy

A fair test is a __________ experiment.

• reliable

• valid

• accurate

• scientific

Independent variable is/are

• The 1 variable that is changed.

• What is being measured.

• Variables that are kept the same.

• The two or more variables that are changed.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS3-3

Dependent variable is/are

• The 1 variable that is changed.

• The variable that is measured.

• The variable that is kept the same.

• The two or more variables that are changed

Tags

NGSS.HS-PS1-3

NGSS.HS-PS3-4

A method is valid if

• A list of equipment is provided

• Variables are controlled

• Variables are not controlled

• They are detailed,logical and easy to understand

A method is valid if

• it allows you to test the hypothesis.

• it allows you to repeat the experiment multiple times.

• it allows you room for error.

• It allows you to draw a results table with averages.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS3-4

NGSS.HS-LS1-3

Which one of these won't help to improve validity

• Using appropriate equipment

• All variables controlled

• A method that tests the hypothesis

• Changing more than one thing in the experiment.

To ensure results are reliable the experiment should be

• Done once

• Repeated

• Done as exactly the same as the method outlines

• Repeated if necessary

A reliable experiment produces results which

• are consistent

• vary greatly

• are different from sample answers

• are not consistent

Results are still reliable if they are within an acceptable margin

• True

• False

Repetition _______________ the effect of outliers and allows them to be removed.

• increases

• minimises

• equals

• justifies