Experimental Design Flashcards

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1
Q

What is a hypothesis?

A

It is a statement written as a fact
Explains a particular observation
It also involves independent and dependant variables

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2
Q

What is an independent variable?

A

It can be altered

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3
Q

What is a dependent variable?

A

These are dependent on the independent variable

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4
Q

Why must you only test one variable at a time in an experiment?

A

To make sure that it isn’t something else causing the change

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5
Q

What is the first stage of designing an experiment?

A

Must have a large sample size

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6
Q

Why do you need a large sample size for experiments?

A

Allows for genetic variation

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7
Q

What is the second stage of designing an experiment?

A

Describe the treatment of groups

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8
Q

What is the third stage of designing an experiment?

A

Identify the control group

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9
Q

What is a control group?

A

A group that is tested under normal circumstances for comparison purposes

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10
Q

What if there is no control group obvious in the experiment?

A

State that all groups are control groups are controls against eachother

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11
Q

What is the fourth step of designing an experiment?

A

Identify the independent, dependent, and controlled variables

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12
Q

How many control variables should be mentioned?

A

3 - 4 variables

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13
Q

What is the fifth step of designing an experiment?

A

Duration experiment

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14
Q

What is the sixth step of designing an experiment?

A

How will the results be shown

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15
Q

What is the seventh step of designing an experiment?

A

What results would support the hypothesis

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16
Q

What is the eighth step of designing an experiment?

A

Mention ethical issues if tests are being performed on live subjects

17
Q

What if there are no ethical issues in an experiment?

A

Still mention an ethical committee