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16 Cards in this Set
- Front
- Back
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statistics
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the study, use, and analysis of data
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population
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TOTAL of some species of organism
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sample
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a PART of a population
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census
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to find out race, gender, age, and population of everyone.
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random sample
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sample without a pattern
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Representative sample
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sample represents each group
(male, female, freshmem, jr.) |
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experimental unit
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a person, animal, etc. that is being studied by a researcher.
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variable
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any characteristic, number, or quantity that can be measured/counted
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Measure of reliability
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how valid something is
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Descriptive statistics
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used to DESCRIBE pop. being studied
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Inferential statistics
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used to make PREDICTIONS about the pop. being studied
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Qualitative data
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words in a graph
(the color of m&ms in a bag) |
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Quantitative data
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numbers
(the temp. for days in January) |
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Basic needs of a graph
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•vertical and horizomtal axis
•scale •title •labels |
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Data set
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collection of data
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Frequency table
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depicts the number of times a value occurs
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