Question

Air pressure is measured in pascals. For a professional American football game, the ball should be inflated to about 90,000 pascals. Scientists studied the effects of air temperature on the pressure inside American footballs by taking these steps: 1. Prepare 100 footballs. 2. Measure each football's air pressure. 3. Divide footballs into 10 groups. 4. Place the groups in different lockers cooled to different air temperatures. 5. After 12 hours, remove the footballs from lockers. 6. Measure each football's pressure again. 7. Compare the new pressures to the starting pressures. What two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative

Answer 1

Answer:

dependent variable the right one is d

Explanation:

i just did it

Answer 2

Answer: The variable "air pressure inside the football" in this experiment is quantitative and dependent variable.

Explanation:

In the experiment, the scientist filled the foot balls with fix quantity of pressure which then kept for 12 hours . After 12 hours the pressure inside the footballs was again measured. Pressure here is a quantitative variable.

Since, air of temperature is an independent variable. Pressure being dependent variable depends upon the temperature of the air.

Independent variable ; The variable which does not depends upon any other variable.

Dependent variable ; The variable which depends upon independent variable or varies with change independent variable..

Qualitative variables are are the variables which cannot be expressed in form of numbers. They generally convey the characteristic ,category ,quality or type.

Where as Quantitative variable are the variables which can be expressed in the form of number.These are the variables which exist along the continuous sequence.