Module 5: Background You’ll Need 2

  • Explain the meaning of a data point on a graph.
Scatterplots are used to illustrate the relationship between two quantitative variables. The explanatory variable (also known as the independent variable) is typically placed on the horizontal x-axis. The response variable (also known as the dependent variable) is on the vertical y-axis.

When Pam first met Kai, he was extremely overweight—almost [latex]100[/latex] pounds overweight, and for this reason alone, his owner wanted him euthanized. Kai’s life was in danger, and he was miserable, but Pam rescued him. Here are the details of Kai’s journey:

  • Initial Weight: Kai weighed [latex]173[/latex] pounds before Pam agreed to foster him. She modified his diet and began walking him three times daily.
  • Constant Rate of Change: A reasonable goal was for Kai to lose about two pounds each week.