Ch. 2 Key Terms Flashcards

1
Q

observation

A

a piece of information we gather using our senses our sight, hearing, smell, and touch.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

hypothesis

A

a testable idea or explanation that leads to a scientific investigation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

prediction

A

a logical statement about what will happen if the hypothesis is supported

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

experiment

A

is a procedure designed to test a hypothesis under controlled conditions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

variable

A

is the factor of interest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

experimental group

A

The group that receives the experimental treatment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

control group

A

The group that does not receive the experimental treatment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

data

A

information that a scientist gathers during an experiment, which is often in numeric form

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

correlation

A

using experiments to answer questions is impossible or unethical, scientists test predictions between two or more events

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

statistics

A

is the collection and classification of data that are in the form of numbers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

mean

A

is the number obtained by adding the data fora characteristic and dividing this sum by the number of individuals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

distribution

A

is the relative arrangement of the members of a statistical population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

probability

A

The chance that something will happen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

sample

A

is a group of individuals or events selected to represent the population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

risk

A

is the probability of an unwanted outcome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

model

A

are representations of objects or systems

17
Q

conceptual model

A

is a verbal or graphical explanation of how a system works or is organized

18
Q

mathematical model

A

is one or more equations that represents the way a system or process works

19
Q

value

A

which are principles or standards we consider important

20
Q

decision-making model

A

is a conceptual model that provides a systematic process for making decisions