Sagot :
Answer:
x squared is a notation that is used to represent the expression x×x x × x . i.e., x squared equals x multiplied by itself.
Answer:
A chi-square (χ2) statistic is a measure of the difference between the observed and expected frequencies of the outcomes of a set of events or variables.
Explanation:
χ2 depends on the size of the difference between actual and observed values, the degrees of freedom, and the samples size.