Ordinal variable
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A type of categorical variable which can be ordered, such as disagree,
netural, and agree
Simple random sampling
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a sample is constructed by random selection from the population
Continuous variable
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A type of quantitative variable which has an infinitely long value along a
continuous range, typically real numbers. Continuous variable usually
represent measurements, like height or temperature.
Histogram
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depicts data values by splitting a continuous variable into a number of class
intervals, each known as a bin
Predictive data analysis
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data analysis that seeks to make predictions from data. Ex: Using models
based on birth rates, death rates, medical care improvements, and other
data, the UN predicts the world population will reach 11.2 billion in 2100.
, Skew
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the difference between the mean and median. A positive value indicates
right leaning, a negative value indicates left leaning
Selection bias
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this exists when the sampling units selected from a population are not
representative of the entire population, and are instead biased toward
certain subsets of the population
Prescriptive data analysis
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data analysis that seeks to make decisions (prescriptions) based on data.
Ex: Population predictions for specific countries help the United Nations
decide where to focus agricultural development efforts.
Stratified sampling
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A type of categorical variable which can be ordered, such as disagree,
netural, and agree
Simple random sampling
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a sample is constructed by random selection from the population
Continuous variable
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A type of quantitative variable which has an infinitely long value along a
continuous range, typically real numbers. Continuous variable usually
represent measurements, like height or temperature.
Histogram
Give this one a try later!
depicts data values by splitting a continuous variable into a number of class
intervals, each known as a bin
Predictive data analysis
Give this one a try later!
data analysis that seeks to make predictions from data. Ex: Using models
based on birth rates, death rates, medical care improvements, and other
data, the UN predicts the world population will reach 11.2 billion in 2100.
, Skew
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the difference between the mean and median. A positive value indicates
right leaning, a negative value indicates left leaning
Selection bias
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this exists when the sampling units selected from a population are not
representative of the entire population, and are instead biased toward
certain subsets of the population
Prescriptive data analysis
Give this one a try later!
data analysis that seeks to make decisions (prescriptions) based on data.
Ex: Population predictions for specific countries help the United Nations
decide where to focus agricultural development efforts.
Stratified sampling
Give this one a try later!
