Question

the scatter graph shows the scores of ten students in their maths and english exam

Answer 1

Answer:

The aim of drawing a scatter graph is to determine if there is a link or relationship between the two variables that have been plotted. If yes, then we say there is correlation.

Positive and Negative Correlations

There are two types of correlation:

Positive correlation – as one variable increases, the other one also increases.

Negative correlation – as one variable increases, the other decreases.

We can also comment on how strong the correlation is. If all the points are very closely aligned (either in negative or positive correlation), then we say that there is strong correlation. If there is correlation but the points are quite spread out, we say that there is weak correlation.