MATHS - Statistics - Correlation Causation Scatter Graphs

What is the purpose of drawing a line of best fit on a scatter graph?

• To separate positive and negative correlations

• To visualize the trend and correlation between variables

• To make the graph look more appealing

• To connect all the points on the graph

Which of the following is an example of positive correlation?

• As the temperature increases, ice cream sales increase

• As the temperature increases, ice cream sales decrease

• As the temperature increases, the number of jackets sold increases

• As the temperature increases, the number of jackets sold decreases

What does it mean if two variables have no correlation?

• Both variables decrease together

• The variables are unrelated and do not affect each other

• Both variables increase together

• One variable causes the other to change

Which statement is true about correlation and causation?

• Causation always implies correlation

• Correlation always implies causation

• Causation and correlation are unrelated concepts

• Correlation sometimes suggests causation but does not prove it

Why is it incorrect to assume causation from correlation alone?

• Because correlation is always random

• Because there might be a third factor influencing both variables

• Because correlation is a type of causation

• Because causation is more common than correlation