The range of a set of scores is calculated by subtracting the smallest score from the largest score. This gives you the spread of the scores in that set.
In the given set of scores: 5, 7, 9, 15, the smallest score is 5 and the largest score is 15.
Now, let’s perform the calculation:
Range = Largest Score – Smallest Score
Range = 15 – 5 = 10
So, the range of this set of scores is 10.
This means that there is a span of 10 points between the lowest and highest scores in the set, which can give you an idea of the variability or spread of the scores.