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15 Cards in this Set
- Front
- Back
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What is Categorical?
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the data is in categories
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What is Quantitative?
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the data can be measured or counted
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What is Discrete?
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has no decimals, shoe size etc.
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What is Continuous?
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can have decimals, height etc.
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What are the three methods of selecting a sample?
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Random Sample
Stratified Sample Systematic Sample |
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What is a Random sample?
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Chance is the only factor
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What is a Stratified Sample?
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chosen in proportion to the entire population
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What is a Systematic Sample?
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A system is in place to choose who is in the sample
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What is the differance Between a Census and a Sample?
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A Census is the entire Population, a sample is a selected group of the population.
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In a histogram what is shown on the vertical and horizontal Axis?
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Vertical axis displays frequency
Horizontal axis displays class intervals (height, income, etc.) |
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How is a bar chart differant from a histogram?
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a bar chart has bar of the same width with equal spaces separating them
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What are symmetric Distributions?
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a single peak that trails off to both sides in roughly the same fashion.
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What is a negitively skewed distribution?
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data peaks and trails off to the left
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What is a positivily skewed distribution?
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data peaks and trails off to the right
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What are outliers?
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when a part of the data lays well away from the other data.
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