Across
1. only 1 variable changed
2. explains observations
3. answer to the problem
4. always avoid!
down
1. prediction
2. sample size to eliminate exceptions
3. don't have what's being tested
4. group with what's being tested
5. can change
6. variable you change on purpose
7. variable that is the outcome
8. variables kept the same
9. problem solving method
10. what we're trying to solve
11. data in tables, graphs, etc.

Runner ran 1 4/5 miles on monday and 6 3/10 on tuesday. how many times her monday’s distance was her tuesdays distance

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?