The following graphs have a scale assigned to them: the area of each grid square is 0.1 square units. Which ones are density curves for a continuous random variable? Check all that apply.

http://assets.openstudy.com/updates/attachments/4e447ac00b8b3609c71ff2e6-clint.m-1313110735120-screenshot20110811at7.53.32pm.png

Question

The following graphs have a scale assigned to them: the area of each grid square is 0.1 square units. Which ones are density curves for a continuous random variable? Check all that apply.

http://assets.openstudy.com/updates/attachments/4e447ac00b8b3609c71ff2e6-clint.m-1313110735120-screenshot20110811at7.53.32pm.png

anonymous · Answer

Chart C is not a density curve because you can't have a negative.

For the others, simply add up the squares and if they equal 1.00, then it is a density curve.

anonymous · Answer

i count 10 boxes in A,B,& D, im not to sure on E???

anonymous · Answer

wait theres only 9 in B... oops