(VNF) – Find out with VietnamFinance what is the chi-square distribution? What is the squared test?
Where o is the measured data, e is the correct prediction value.
Watching: What is Chi-square
The squared test helps to find real trends from a measure containing random disturbances. It can be applied to data drawn at random from a set or to measures that are independent of each other.
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This method also checks the statistical independence and fit of the data.
See also: What is kinetic energy – Lesson 16: Mechanical energy: Potential energy, kinetic energy
(References: Nguyen Van Ngoc, Economic Dictionary, National Economics University)
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