| Term | Definition |
| experimental method | most scientists make most of their discoveries using this method |
| observation | a piece of information that gathered by using our senses |
| hypotheses | educated guess |
| prediction | a logicalstatement about what will happen if the hypothesis is correct |
| experiment | a procedure designed to test a hypothesis under controlled conditions |
| variable | a factor of interest, which changes during an experiment |
| experimental group | a group that recieves the experimental treatment |
| control group | a group that does not received the experimental treatment |
| data | the information gathered during an experiment |
| correlation | reliable associations between two or more events |
| mean | a number that is obtained by adding up the data for a given characteristic and dividing this bum by the total number of individuals |
| distribution | the relative arrangement of the members of a statistical population |
| probability | the chance that something will happen |
| sample | a group of individuals or events selected to represent the population |
| risk | probability of an unwanted outcome |
| models | representations of objects or sysstems |
| conceptual model | a verbal or graphical explanation for how a system works or is organized |
| mathematical model | one or more equations that represents how a system works or is organized |
| values | standards or principles that we consider important |
| decision-making-model | a conceptual model that provides a systematic process for making decisions |