Independent and dependent variables

Question 1

independant variable

Answer 1

An independent variable is the variable that is changed in a scientific
experiment.

Question 2

dependant variable

Answer 2

A dependent variable is the variable being measured in a scientific
experiment.

Question 3

what can independent and dependant variable be?

Answer 3

Independent and dependent variables can be continuous or discrete

Question 4

what do experiments involve?

Answer 4

Experiments involve the manipulation of the independent variable by the
investigator

Question 5

what is compared to a control group?

Answer 5

The experimental treatment group is compared to a control group

Question 6

what allows simple experiments to be conducted?

Answer 6

The control of laboratory conditions allows simple experiments to be
conducted more easily than in the field.

Question 7

drawback of a simple experiment?

Answer 7

However, a drawback of a simple experiment is that its findings may not
be applicable to a wider setting.

Question 8

what is a multifactorial experiment?

Answer 8

A multifactorial experiment involves a combination of more than one
independent variable or combination of treatments.

Question 9

what may investigators use?

Answer 9

Investigators may use groups that already exist, so there is no truly
independent variable

Question 10

observational studies

Answer 10

Observational studies are good at detecting correlation, but since they do
not directly test a hypothesis, they are less useful for determining
causation

Question 11

what happens in observational studies?

Answer 11

In observational studies the independent variable is not directly controlled
by the investigator, for ethical or logistical reasons.