Quantitative
Qualitative
Interval
Ratio
Nominal
Ordinal
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You can make an average of it
Quantitative
Is a numerical measurement of something
You can make an average of it
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Qualitative
refers to a "quality" or categorical characteristic of something
from samples and populations
Descriptive Statistics
Involve methods of organizing, picturing and summarizing information
from samples and populations
from a sample to draw conclusions about the population
Inferential Statistics
involves methods of using information
from a sample to draw conclusions about the population

Population ParametersSample Statistics

A population is a group of peple or objects
with a common theme
When every member of the group is considered
It is a population
A small portion of the population
is a sample
Can be a representative sample
or a biased sample
Data from every individual
is available in population data
Entire population
Census
Sample data is only available from
some of the individuals in the population

© Vincent Chido King - Master Black Belt L6S

2026