እነሱ ብዙ ጊዜ እንደሚያመለክቱት እነዚህ መመዘኛዎች በተለምዶ ተቀባይነት ያገኙ ናቸው .
Test statistics that follow a chi-squared distribution arise from an assumption of independent normally distributed data, which is valid in many cases due to the central limit theorem . (wikipedia.org)