The ordered data set $\{4, 9, 14, 18, 23\}$ has a range of $19$ and an IQR of $14$. Which measure better represents the spread if an outlier of $100$ is added?

Range, because it uses all values

IQR, because it is not affected by the outlier

Both measures are equally reliable

Neither measure describes spread

Team X has an IQR of $5$ points per game. Team Y has an IQR of $18$ points per game. Which team is more consistent, and why?

Team Y, because a larger IQR means more scoring

Team X, because a smaller IQR means the middle 50% of scores are tightly clustered

Team X, because it has a smaller range

Team Y, because a larger IQR means less variability