OpenIntro features a number of free books that can be used in high school and AP statistics courses. The license on these datasets is currently unknown. You can find out more about OpenIntro at https://www.openintro.org.
Does treatment using embryonic stem cells (ESCs) help improve heart functionfollowing a heart attack? Each sheep in the study was randomly assigned tothe ESC or control group, and the change in their hearts' pumping capacitywas measured in the study. A positive value corresponds to increased pumpingcapacity, which generally suggests a stronger recovery.