Investigating Science Module 2 revision

Select 3 reasons a scientist would review published research when commencing a scientific investigation.

• So they can use the collective knowledge of scientists that have done research in the field before.

• So they can design an experiment that builds on the work that has already been done in the field.

• So they can repeat someone else's experiment and claim it as their own.

• So they don't do an unnecessary investigation.

An outlier is:

• Any data point that disproves your hypothesis.

• A data point that does not sit on the line of best fit.

• A data point that is very different from the others.

• Not going to effect your data in any way.

Correlation is:

• A measure of how likely it is that one variable affects the other.

• The line of best fit.

• An estimate of a value based on extending a known sequence of data.

• An estimate of a value in between two data points.

How did Aboriginal and Torres Strait Islander people remove toxins from poisonous plants?

• drying

• leaching

• grinding up into flower

• cooking

When a hypothesis is accepted and it should not be it is called a...

• type 1 error

• type 2 error

• type 3 error

• type 4 error

How would the outlier in the picture affect the line of best fit?

• It would not.

• It would make the line higher.

• It would make the line lower.

• There would be a spike in the line.

Should you remove outliers from your data set?

• No, all data collected should be used.

• Yes, it makes the graph look ugly.

• No, it will have not affect on the data set.

• Yes, the outlier was probably caused by an error and it is affecting the line of best fit.

Seeing a face or animal where there is none is called...

• optical illusion.

• pareidolia.

• correlation.

• pattern recognition.

Optical illusions are:

• type 2 errors.

• all fake.

• The result of the brain making shortcuts.

• seeing faces where there are none.

Which is not a theory about the origins of life

• Pareidolia

• Abiogenisis

• Clay theory

• Panspermia