B. Data

The first is about describing what data is going to be used and where this has come from. i.e

• describe the variables in the data that are used in the investigation and how they are measured.

• describe what is 'normal' for these variables in the populations in question.

• state which variable is independent and which is dependent.

• state where the data has come from. ie:

  • • who collected it.

    • how was it collected.

    • why was it collected.

    • how confident are you that the data is accurate?
      i.e
      Does the source have a reputable reputation?

In this part of the investigation you are reporting what you see in the data (scatterplot) before you perform any kind of analysis.

• • • We are looking to see which model to use for the data we have.

    • We do this to ensure that any predictions we make are going to be accurate.

    • We use the term 'eyeballing' to describe this process.

    • Your statements are unlikely to have any numerical values but will have terms like, strong/moderate/weak, positive/negative, uniform/non-uniform, etc