ES ch 2 Tools of science vocab review

representations of objects or systems

a conceptual model that provides a systemic process for making decisions

A bell-shaped curve

A statement made in advance that implies the results that is obtained from testing hypothesis

The group of individuals or events selected to represent the population

The number of events or objects sampled

The group that is used as the standard of comparison with the experimental group

The chance that something will happen

the probability of an unwanted outcome

The number that is the average of the data collected

maps and charts

Any piece of information acquired through observation or experimentation

principles and standards we consider important

A factor that changes in an experiment in order to test a hypothesis

The relative arrangement of the members of a population, usually shown on a graph

3-D models

The process of obtaining information by using the senses

A theory or explanation that is based on observations and that can be tested

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

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

A group that is identical to the control group except for one factor that is changed

Procedure carried out under controlled conditions to test a fact or theory

a verbal or graphical explanation for how a system works, a flow chart

The linear dependence between two variables