In the mid-1990s, one of the main debates in Major League Baseball was whether Derek Jeter or David Justice was a better baseball player. One key metric in this debate was their respective batting averages, calculated as the number of hits divided by number of at-bats. The following information is available regarding their batting averages in the years 1995 and 1996:

	1995		1996		Combined
Player	Number of Hits	Number of At-Bats	Number of Hits	Number of At-Bats	Number of Hits	Number of At-Bats
Derek Jeter	12	48	183	582	195	630
David Justice	104	411	45	140	149	551

1. Looking at the years 1995 and 1996 individually, who has a higher batting average?

2. Look at the two years combined, who has a higher batting average?

3. Compare your answers to parts a and b. What phenomena is at play here, and why does it occur?