Year 10 Science: Skill Builder Quiz

An average is a measure of the ____________ of a data set.

• minimum value

• maximum value

• central or typical value

• range

Identify which of the following is not a type of mathematical average.

• Mean

• Mode

• Sum

• Median

The mean, median and mode of a data set are always the same value.

• True

• False

A valid investigation is a fair test.

• True

• False

A reliable investigation is one that can be ___________.

• repeated many times with the same results

• repeated once with the same results

• repeated many times with different results

• repeated once with similar results

Reliability can be improved by selecting a large, representative ____________.

• group

• participants

• sample

• results

What does it mean to say that the results of your investigation have been reproduced?

• You have repeated your own investigation and obtained the same results

• Someone else has repeated your investigation and obtained the same results

An investigation can be valid but not reliable.

• True

• False

An investigation can be reliable but not valid.

• True

• False

The variable that the Experimenter has control of

• Independent

• Dependent

• Confounding

• Extraneous