Chapter 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. 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
experimental group
a group of subjects who are exposed to the variable under study
control group
the standard to which comparisons are made in an experiment
data
facts and statistics collected together for reference or analyze
correlation
a mutual relationship or connection between two or more things
statistics
the practice or science of collecting and analyzing numerical data in large quantities
mean
the average of a set of numbers
distribution
the action of sharing something out among a number of recipients
probability
the extent to which something is probable , the likelihood of something or being the case
sample
a representative subset of a population
risk
a situation involving explosure to danger
