Designing Experiments

Question 1

An essential component of the scientific method

Answer 1

experiments

Question 2

1st step in solving a problem

Answer 2

stating a number of hypotheses to tentatively answer a problem

Question 3

6 concepts in designing an experiment

Answer 3

1. Proper statement of the hypothesis
2. Identifying the variables
3. Preparation of experimental subject and materials
4. Use of replicates and large sample size
5. Randomization
6. Use of Controls

Question 4

WHAT is any factor that can be changed, controlled, and measured

Answer 4

Variables

Question 5

3 types of variables

Answer 5

1. dependent
2. independent
3. controlled

Question 6

Considerations before preparing an experimental subject (4)

Answer 6

1. available
2. easily manipulated
3. provide ways to measure DV
4. verify genetic background

Question 7

To enhance validity of results, treatment is given to:

___ experiment subject
___ replicates

Answer 7

only one

numerous

Question 8

What can determine the increase of a sample size

Answer 8

increase in # of replicates

Question 9

A sufficient sample size is dependent on… (4)

Answer 9

1. nature of research
2. number of variables
3. costs
4. confidence intervals

Question 10

What tries to balance out the differences between individual subjects, minimizes confounding variables, and removes potential bias

Answer 10

Randomization

Question 11

What experiment is wherein you will divide the subject into two groups?

Answer 11

controlled experiment

Question 12

In a controlled experiment, what do you call the

1. subject that will be treated
2. subject that will be given a placebo

Answer 12

1. experimental group
2. controlled group

Question 13

Two types of control group

Answer 13

1. Positive
2. Negative