Enviromental Science terms Chap.2
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20 terms
Terms | Definitions |
|---|---|
 Observation | a piece of information we gather using our senses-our sight, hearing, smell and touch. |
| hypothesis | a testable explanation for an observation. |
| prediction | a logical statement about what will happen if the hypothesis is correct. |
| experiment | a prcedure designed to test a hypothesis under controlled conditions. |
| variable | the factor of interest |
| experimental group | the group that recieves the experimental treatment. |
| control group | the group that does not recieve the experimental treatment. |
| data | the information that a scientist gathers during an experiment, which is often in a numeric form. |
| correlations | reliable associations between two or more events. |
| statistics | the collection and class of data that are in the form of numbers. |
| mean | the number obtained by adding up the data for a given characteristic and dividing this sum by the number of individuals. |
| distribution | the relative arrangement of the members of a statistical population. |
| probability | the chance that something will happen. |
| smaple | 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 model explanation for how a system works or is organized. |
| mathematical model | one or more equations that represents the way a system or process works. |
| values | principals or standards we consider important. |
| decision-making model | a conceptual model that provides a systematic process for making desicions. |
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