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Unit 6 Exam

vocabulary section

TermDefinition
Population the group being studied
Sample Part of a group
Voluntary Response Sample involving only those who want to participate
Convenience Sample Sample in which members of a population are easily accessed
Biased Sample in which one or more parts of the population are favored over other parts
Systematic Sample Random sample in which items are selected according to a specific time or interval
Simple Random Sample Random sample in which each item is as likely to be chosen as any other item
Survey A method of collecting data
Double Two box plots on the same number line
Unbiased Sample that represents the entire population
Stratified Random Sample Population is first divided into similar groups, then a simple random sample is taken
Mean Average: add up all the numbers and divide by how many are there
Mode Number that occurs most often
Median Number in the middle: line up numbers from smallest to biggest and cross off numbers on each side
Range Difference between the largest and smallest piece of data
Bar Graph Graph used with categories
Line Graph Graph used to show change over period of time
Histogram Graph used to show data with ranges
Circle Graph Graph used with percentages
Created by: tory.brown
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