A&PII Lab 10: Scientific Methods & Experimental Design

Question 1

Observations

Answer 1

made using senses; about any object or situation

Question 2

Inferences

Answer 2

generalizations developed from repeated observations

Question 3

Qualitative

Answer 3

data represented by words

Question 4

Quantitative

Answer 4

data represented by numerals

Question 5

Control

Answer 5

devised to test if the results of the experiment would occur without the impact of the independent variable

Question 6

Negative control

Answer 6

attempt to focus on certain variables to see if the desired effects occur with just those variables

Question 7

Positive control

Answer 7

check to see if your proposed independent variables will produce the effect you expect

Question 8

Hypothesis

Answer 8

statement of the relationship between the independent variables and the dependent variables; can be used to predict future experimental outcomes; simple = if/then statement

Question 9

Large sample size

Answer 9

important because unforeseen variables may not be held constant and therefore may impact results

Question 10

Repeating measures

Answer 10

repeating the experiment; important because you want to make sure the experimental results are reliable and will occur in more than one instance; the more you repeat, the better

Question 11

Reproducing the same results

Answer 11

results should be able to be obtained by others who follow your very same experimental design