To determine which athlete shows the most consistency in her 400-meter race time, we need to compare the interquartile ranges (IQR) of each sprinter. The IQR is a measure of statistical dispersion indicating the range within which the middle 50% of values fall. Therefore, the smaller the IQR, the more consistent the athlete's race times are.
From the given data:
- Athlete A: IQR = 3
- Athlete B: IQR = 2
- Athlete C: IQR = 4
Comparing these IQR values, Athlete B with an IQR of 2 has the smallest interquartile range.
Hence, the completed statement should be:
Athlete B shows the most consistency in her 400-meter race time, because her IQR is the smallest.