Organisation: Correlating Risk Factors

Question 1

How are non-communicable diseases caused?

Answer 1

Non-communicable diseases are caused by risk factors.

Question 2

What is studying the patterns of risk factors called?

Answer 2

Studying the patterns of risk factors is called epidemiology.

Question 3

What are scatter graphs used for?

Answer 3

Scatter graphs are used to find correlations between two or more variables.

Question 4

What do scientists call the relationship between two variables that move in tandem?

Answer 4

Scientists call two variables that move in the same direction a positive correlation.

Question 5

What do scientists call the relationship between two variables that do not move in tandem?

Answer 5

Scientists call two variables that do not move proportionally as having a negative correlation.

Question 6

Do scatter graphs prove a cause?

Answer 6

Scatter graphs do not prove a cause they only suggest that two variables may be linked.

Question 7

What is sampling?

Answer 7

Sampling is when scientists select a sample of people to collect data from to possibly represent a population.

Question 8

What must we do to avoid bias in a sample?

Answer 8

To avoid bias in a sample we must take a large of a sample as possible and random as possible.

Question 9

What is meant by a casual mechanism?