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Statistics terms

Math

TermDefinition
Median The middle data value
Mode The value that occurs most often
Range The difference of the greatest value and the least value
Inter Quartile Range (IQR) Represents the difference between the third quartile and the first quartile
Outlier A data point that varies significantly from the rest of the data
Skewed - left The distribution has a long tail extended to the left. Skewed to the left
Skewed - right The distribution has a long tail extended to the right. It is skewed to the right.
Symmetrical Perfectly symmetrical because it can be divided into two halves that are mirror images of each other. They do not have perfect symmetry
Bi-modal The distribution has two modes ( or "humps")
Uniform The distribution of data is all the same. Has no mode and is also considered symmetrical
Mean The average of the data
Mean Absolute Deviation (M.A.D) The average distance that the data points in a set of data are from the mean
Probability The likelihood that an event will happen can be a given number value
Impossible Some events will never happen
Certain An event that will definitely happen
equally probable An event that will happen half of the time
unlikely An event that is not likely to happen but not impossible
likely An event that will likely happen but is not certain
Sample Size Describes the number of data points collected in the sample
Quartile 1 (Q1) Median of 1st half
Quartile 3 (Q3) Median of 2nd half
Complement The opposite of an event. It includes all the outcomes that are NOT part of the original event.
Created by: user-1970486
 

 



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