To identify the outlier in the scatterplot, we look for a point that deviates significantly from the general trend of the other points.
Based on your description:
- The point (0.5, 45) appears to be lower than the rest of the data points, which cluster around higher grades (77 to 98) for hours studied between 1 and 4.5.
- The other points, such as (1, 78), (2.5, 87), and (4.5, 97), fall within a tighter range of grades.
Therefore, the outlier is:
(0.5, 45)