Answer :
A scatter diagram can help determine whether there is a linear relation between variables and whether the relation is positive or negative.
The scatter diagram shows the relationship between two variables. In this case, we need to determine whether the scatter diagram indicates a linear relation between the variables and if the relation is positive or negative.
To determine whether the relation is linear, we can examine the shape of the scatter plot. If the data points seem to roughly form a straight line, then a linear relation may exist.
If the scatter plot shows that the data points are generally sloping upwards from left to right, we have a positive association. On the other hand, if the data points are generally sloping downwards from left to right, we have a negative association.
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