Ch. 2 Key Terms

Question 1

observation

Answer 1

looking at data and formulating an opinion.

Question 2

hypothesis

Answer 2

Taking an educated guess off of the data and observations that can be tested.

Question 3

prediction

Answer 3

Expressing what you think will happen while testing your hypothesis.

Question 4

experiment

Answer 4

Procedures that are carried out under strict conditions to test theories.

Question 5

variable

Answer 5

The factor that changes to test the hypothesis.

Question 6

experimental group

Answer 6

Same as the control group, it just has the variable added to it.

Question 7

control group

Answer 7

The group that the experimental group is judged against.

Question 8

data

Answer 8

The information that is gathered from the experiment.

Question 9

correlation

Answer 9

Similarities of different things that can determine or find out the answer to the hypothesis.

Question 10

statistics

Answer 10

Analyzing numerical data in an experiment.

Question 11

mean

Answer 11

The average of numerical data.

Question 12

distribution

Answer 12

The spread of something around.

Question 13

probability

Answer 13

The likelihood of something happening based off of data and analysis of the data.

Question 14

sample

Answer 14

A piece of what is being studied.

Question 15

risk

Answer 15

The chance that something will go wrong.

Question 16

model

Answer 16

A sample or display of something that is portraying something else.

Question 17

conceptual model

Answer 17

A representation of a system or set of concepts.

Question 18

mathematical model

Answer 18

A description of a system while using mathematical language.

Question 19

value

Answer 19

Estimate the worth of something.

Question 20

decision-making model

Answer 20

A display showing the method of how they plan to solve something.