PLEASE HELP!!!!

Suppose an experiment is designed to test the durability of batteries in different conditions. All of the batteries tested are double-A (AA) Brand X. All sets of batteries are preconditioned in different environmental conditions for exactly 168 hours (1 week).

Set 1: 0°C (freezing point of water)
Set 2: 24°C (approximately room temperature)
Set 3: 37°C (approximately body temperature)

The batteries are then continuously used to power identical mechanical drummer toys. As long as the toy keeps drumming the battery is considered functional.

Question

PLEASE HELP!!!!


Suppose an experiment is designed to test the durability of batteries in different conditions. All of the batteries tested are double-A (AA) Brand X. All sets of batteries are preconditioned in different environmental conditions for exactly 168 hours (1 week).

    Set 1: 0°C (freezing point of water)
    Set 2: 24°C (approximately room temperature)
    Set 3: 37°C (approximately body temperature)

The batteries are then continuously used to power identical mechanical drummer toys. As long as the toy keeps drumming the battery is considered functional.

countrygirl1431 · Answer

The drumming time for each toy is measured as an indication of battery durability.

In this experiment, which condition is not controlled?
temperature
brand of batteries
test for durability
type of battery (battery size)

anonymous · Answer

test for durability

anonymous · Answer

the condition not controlled is the variable that you are looking for
since our tests already control the temperature(0,24,37), brand of batteries (Brand X), and type of battery (Double A), then it has to be the test for durability