Mathematics

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Measures of Dispersion
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Range
Largest value – Smallest value
Median number
The value in the middle when a set of data is arranged in an ascending or descending order
First quartile, Q1
Known as lower quartile
Cumulative frequency
Determined by adding its frequency and all the frequencies before it

Variance

The average of the square of the difference between each data and the mean

The standard deviation

The square root of the variance which also measures the dispersion of a data set relative to its mean
Box plot
Aatu cara untuk mempamerkan taburan bagi suatu set data berdasarkan nilai minimum, kuartil pertama, median, kuartil ketiga dan nilai maksimum bagi set data berkenaan
A low standard deviation indicates that the data is dispersed close to the mean
A high standard deviation indicates that the data is dispersed far from the mean
The case that included in data changes
The existence of outliers or extreme values in the set of data
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