Ch. 2 Key Terms. Flashcards
observation
the action or process of observing something or someone carefully or in order to gain information.
hypothesis
a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
prediction
a thing predicted; a forecast.
experiment
a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
variable
not consistent or having a fixed pattern; liable to change.
experimental group
the group of participants who are exposed to the independent variable.
control group
the standard to which comparisons are made in an experiment.
data
facts and statistics collected together for reference or analysis.
correlation
a mutual relationship or connection between two or more things.
statistics
purpose of inferring proportions in a whole from those in a representative sample.
mean
average value calculated by taking the sum of all values and dividing by the total number of values.
distribution
process of making a product or service available for the consumer or business user who needs it
probability
he extent to which something is probable; the likelihood of something happening or being the case.
sample
a small part or quantity intended to show what the whole is like.
risk
a situation involving exposure to danger.
