YEAR  AB   H 2B 3B HR BB SB CS
Hank Aaron
    1959 629 223 46  7 39 51  8  0
    1971 495 162 22  3 47 71  1  1

AB = At Bat (Chances)
H = Hits = 1B + 2B + 3B + 4B
1B = singles = H - (2B+3B+HR)
2B = doubles (2 bases)
3B = triples (3 bases)
HR = 4B = home runs (4 bases)
BB = base on balls (walk, 1 base)
SB = stolen base (1 base)
CS = caught stealing

Total Bases = 1B + 2*2B + 3*3B + 4*HR
   + SB + BB

Total Average = (Total Bases)
               / (AB - H + CS)

   POORLY SPECIFIED PROBLEMS

1. Find a player's home runs
 for a given year from the player's record

2. Compute a player's home runs total
 for all the given years
 (can you use iteration?)

3. Compute a player's total average
 for a given year.

4. Compute a player's total average
  for all the given years.

YOU ARE TO COME UP WITH QUESTIONS
TO CLARIFY THESE (2 minutes)

;   YEAR  AB   H 2B 3B HR BB SB CS
(year-homers 1959
 '((1959 629 223 46  7 39 51  8  0)
   (1971 495 162 22  3 47 71  1  1)))

For 15 minutes,
either in groups of 2 or alone,
write solutions to problems 1-3.

1. Find a player's home runs
 for a given year from the player's record

2. Compute a player's home runs total
 for all the given years
 (can you use iteration?)

3. Compute a player's total average
 for a given year.

(year-homers 1959
 '((1959 629 223 46  7 39 51  8  0)
   (1971 495 162 22  3 47 71  1  1)))

We'll select best in groups afterwards

For 5 minutes,
in groups of 10 or so,
select the best procedures
  (if you have more than 1),
or pool your ideas to write a solution
  (if you have 0),
or discuss how you arrived at a solution
  (if you have just 1)

If time select worst of complete

Each group sends a representative to
a conference in back.

Conference puts top 3 programs
for 1, put those on board,
while selecting top 3 for 2

Others work on problem 4
and listen to discussion of problem 1