A researcher is interested in how the police respond to domestic violence. She feels that officer characteristics, such as gender, may be associated with officer attitudes about domestic violence (Female officers might be less likely to tolerate domestic violence.) A random sample of 100 police officers is obtained from a large Midwestern city for the study. Officer attitudes about domestic violence are measured by a scale from 1 (lowest degree of tolerance) to 10 (highest degree of tolerance).
What is the sample?