A coach tells his little league players that hitting a 0.275 batting average, within 7% percentage error, means that they had a really great season. Seven year old Tommy ended the season hitting a 0.258 batting average. According to his coach, did he have a great season?

Answer 1

0.07 * 0.275 = 0.019

0.275 - 0.019 = 0.256

Yes. Tommy had a great season.