. The physician director of the ED is concerned that radiologists are not reading x-ray files within 12 hours of an exam as required by the hospital policy. He suspects that recent changes in the radiologists' schedule have caused an increase in the number of exams that are read beyond the 12 hours requirement.

What graph is best, to show the director whether he is correct in his suspicions?

Explain why,or what features of this graph would make it the best choice? Explanation should be in terms of statistical language.

Note: My thoughts:

So looks like need to track 3 variables and see how they correlate?

1. Is xray read within 12 hours? 2. Xray reading times in relation to radiologists schedule?3. # of exams read beyond 12 hr requirement?

I am thinking either a scatter or histogram? Explain reasons for best graph suggestion.