LAB 2 RESEARCH PROJECT pg.29

Question 1

What is an independent variable?

Answer 1

Things that you set in the experiment, in other words, a variable that does not depend on that of another.

Question 2

What is a dependent variable?

Answer 2

The variable that “depends” on the independent variable

Question 3

What is a confounding variable?

Answer 3

Third variable effects both the independent and dependent variables.

Question 4

For example, if we want to explore whether high concentrations of vehicle exhaust impact the incidence of asthma in children. Find Independent, dependent and confounding variables.

Answer 4

Independent Variable: Vehicle exhaust
Dependent variable: Asthma
Confounding variable: differential exposure to other factors that increase respiratory issues, like cigarette smoke or particulates from factories

Question 5

What is a negative control?

Answer 5

The negative control group would be something where we expect it will not react. There will be no response.

Question 6

What is positive control?

Answer 6

Positive controls are used to assess the test validity of the experimental protocol or equipment by producing the expected result.

Question 7

Define a control group.

Answer 7

A group in an experiment that doesnt get effected by the experiment is there to rule out any descendency and make sure that there is a change to the group outside the control.