Question

An experiment was designed using school children as subjects to determine whether milk prevented their catching colds. The researcher randomly assigned 100 school children to two groups - one group of 50 to receive a cup of milk at school each day and the other group of 50 to receive no milk at school.

1.What is the response variable? Remember: The response variable is measured on the individual.
A) The number of children who caught a cold
B) Whether the child received a cup of milk at school each day
C) Whether the child caught a cold
D) The number of children who received a cup of milk at school each day
2.What is the explanatory variable in the milk study?
A) Whether the child received a cup of milk at school each day
B) The number of children who received a cup of milk at school each day
C) The number of children who caught colds
D) Whether the child caught a cold

Answer 1

1. C
2. A

Step-by-step explanation:

The response variable is measured on each individual. In this case the variable we must measure is whether a child caught a cold.

We must asses whether the milk is responsable for the changes in results, to assure this we must be sure that the child received a cup of milk at school each day.