Question

experimental design practice hw#1 - due mon directions: please read each problem and experiment below. identify the parts of the experiment! 1. problem: does smoking affect your ability to breathe during activity? experiment: measure the number of breaths per minute while climbing stairs of three groups: people who smoke every day, people who smoke once a week, and people who never smoke. these people are all the same age, weight, height and activity level. part of experiment answer independent variable dependent variable constants experimental groups control group

Explanation:

Step1: Identify independent variable

The factor being changed is smoking frequency.

Step2: Identify dependent variable

What is being measured is breaths - per - minute during activity.

Step3: Identify constants

Same age, weight, height and activity level are kept constant.

Step4: Identify experimental groups

Groups with different smoking frequencies are experimental.

Step5: Identify control group

The non - smoking group is the control.

Answer:

Part of experiment	Answer
Dependent Variable	Number of breaths per minute while climbing stairs
Constants	Age, weight, height, activity level
Experimental Groups	People who smoke every day, people who smoke once a week
Control Group	People who never smoke