Final answer:
A positive correlation means that variables move in the same direction, while a negative correlation means that variables move in opposite directions. If there is no correlation, it means there is no relationship between the variables.
Step-by-step explanation:
A positive correlation means that the variables move in the same direction. This means that as one variable increases, the other variable also increases, and as one variable decreases, the other variable also decreases. On the other hand, a negative correlation means that the variables move in opposite directions. This means that as one variable increases, the other variable decreases, and as one variable decreases, the other variable increases. If there is no correlation, it means that there is no relationship or pattern between the variables.