Final answer:
The baby monkey data shows a positive correlation between age in weeks and weight in ounces, but this does not establish causation. Similarly, Figure A3 is used by healthcare providers to compare a child's development with standard growth patterns in length and weight.
Step-by-step explanation:
The data shows a positive correlation because as the age in weeks of the baby monkeys increases, their weight in ounces also increases. This is indicative of a relationship where two variables move in the same direction; as one increases, the other does as well. However, it is important to note that while correlation can suggest a possible relationship, it does not prove causation. The data cannot be used to definitively show causation without further, more controlled investigative methods.
In Figure A3, which illustrates the Length-Weight Relationship for American Boys and Girls, healthcare providers use this type of data representation to assess whether a child's physical development aligns with typical growth patterns. For example, Point A on this line graph indicates that a boy who is 28 inches long is expected to have a median weight of about 19 pounds. These types of graphs are essential in monitoring child development and providing benchmarks against which individual growth can be compared.