In a data set, if the lowest score is 10 and the highest is 50, what is the range?

To determine the range of a data set, you subtract the lowest score from the highest score. In this case, the lowest score is 10 and the highest score is 50. When you perform the calculation:

50 (highest score) - 10 (lowest score) = 40

The range represents the difference between the highest and lowest values in the set, providing a measure of how spread out the data points are. Thus, 40 is indeed the correct calculation for the range in this situation. The other options do not reflect this difference, as they are not directly related to the range calculation.