Question

Carlos reviewed the data on water use in the United States. Carlos wanted to help conserve water so he and his father fixed all the leaks in the house and garage. Carlos hypothesized that if they fixed their leaks, they would not use as much water as before. What MUST Carlos do to make this a real experiment?

A) Determine his manipulated variable.
B) Draw a conclusion from the data in the bar graph.
C) Collect and analyze data before and after the leaks are fixed.
D) Make a prediction about the amount of water used before fixing the leaks.

Answer 1

Option C

Step-by-step explanation:

Here's why:

Carlos has the manipulated variable - fixing the leaks. Now he must Collect and analyze data before and after the leaks are fixed.

Answer 2

The correct option is C) Collect and analyze data before and after the leaks are fixed.

Step-by-step explanation:

The hypothesis that Carlos has generated is that if the leaks in the house are fixed, then the water consumption would be reduced. To check the validity of this hypothesis Carlos must design an experiment in which the dependent variable should be water consumption and the independent variable should be the leaks in the house.

To deduce the results, Carlos must check the usage of water for a fixed period before fixing the leaks and then check the usage of water after fixing the leaks for the same period.