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15 Cards in this Set

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