A researcher who is presenting their work at a conference be…

A researcher who is presenting their work at a conference begins by explaining to the audience how common obesity is among children. “My work addresses causes of obesity in children” he begins, “this work is important to increase understanding of this concerning epidemic and to inform practitioners about early warning signs.” The researcher is addressing the ______________________ of his work.

Your boss asked you to report on how successful students ten…

Your boss asked you to report on how successful students tend to be in HDFS 312W at Penn State. To study this, you get permission to access the final grade of students who took HDFS 312W at the University Park Campus in the spring semester. You are thrilled to see that average final grade was a B+. You report back that Penn State students do well in HDFS 312W. Are the results of your investigation externally valid?