Analysing data

Question 1

1) What is a correlation?

Answer 1

A correlation is a link between two factors

Question 2

Give an example of a correlation that doesn’t show causation.

Answer 2

Pollen levels increase the chance of getting hay fever.

Question 3

What is peer review

Answer 3

When other scientists check to see if the work you posted is reliable.

Question 4

Why are repeats carried out in scientific tests

Answer 4

To increase the reliability

Question 5

Why is pollen a more likely cause of hayfever compared to ice cream sales.

Answer 5

Because pollen is breathed in and affects the airwaves. Whereas there is no sufficient evidence suggesting that ice cream does something in your system.

Question 6

How is a strong and weak correlation different.

Answer 6

A strong correlation is where if you draw a line of best fit then the data most of the data will fit near perfect whereas a weak correlation is where if you draw a line of best fit through it most won’t fit through.

Question 7

What is a positive correlation

Answer 7

When one factor increases then another factor increases

Question 8

What is a negative correlation

Answer 8

When one factor increases the other drops.