| A | B |
| observation | a piece of information we gather using our senses |
| hypothesis | a testable explanation for an observation |
| prediction | a logical statement about what will happen if the hypothesis is correct |
| experiment | a procedure designed to test a hypothesis |
| variable | the factor of interest |
| experimental group | the group that receives the experimental treatment |
| control group | the group that does not receive the experimental treatment |
| data | the information gathered during an experiment |
| correlation | reliable associations between two or more events |
| statistics | the collection and classification of data that are in te form of numbers |
| mean | the number obtained by adding up the data and dividing the sum by the number of individuals |
| distribution | relative arrangement of the members of a statistical population |
| probability | the chance that something will happen |
| sample | the group of individuals or events selected to represent the population |
| risk | the probability of an unwanted outcome |
| models | representations of objects or systems |
| conceptual model | a verbal or graphical explanation for how a system works or is organized |
| mathemetical model | one or more equations that represents the way a system or process works |
| values | principles or standards we consider important |
| decision-making model | a conceptual model that provides a systematic process for making decisions |