chapter 2

Question 1

observation

Answer 1

the action or process of observing something or someone carefully or in order to gain information.

Question 2

hypothesis

Answer 2

a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Question 3

prediction

Answer 3

a guess of whats going to happen in the future

Question 4

experiment

Answer 4

a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Question 5

variable

Answer 5

not consistent or having a fixed pattern; liable to change.

Question 6

experimental group

Answer 6

a group of subjects who are exposed to the variable under study

Question 7

control group

Answer 7

is used in an experiment as a way to ensure that your experiment actually works.

Question 8

data

Answer 8

facts and statistics collected together for reference or analysis.

Question 9

correlation

Answer 9

a mutual relationship or connection between two or more things.

Question 10

statistics

Answer 10

the practice or science of collecting and analyzing numerical data in large quantities, especially for the purpose of inferring proportions in a whole from those in a representative sample.

Question 11

mean

Answer 11

have as a consequence or result.

Question 12

distribution

Answer 12

the action of sharing something out among a number of recipients.

Question 13

probability

Answer 13

the extent to which something is probable; the likelihood of something happening or being the case.

Question 14

sample

Answer 14

a small part or quantity intended to show what the whole is like.

Question 15

risk

Answer 15

a situation involving exposure to danger.

Question 16

model

Answer 16

a three-dimensional representation of a person or thing or of a proposed structure, typically on a smaller scale than the original.

Question 17

conceptual model

Answer 17

s a representation of a system that uses concepts and ideas to form said representation

Question 18

mathematical model

Answer 18

A mathematical model is a description of a system using mathematical concepts and language. The process of developing a mathematical model is termed

Question 19

value

Answer 19

the regard that something is held to deserve; the importance, worth, or usefulness of something.

Question 20

decision making model

Answer 20

The rational decision-making model describes a series of steps that decision makers should consider if their goal is to maximize the quality of their outcomes.