The numerator and denominator degrees of freedom are used in which of the following test-statistic in hypothesis testing?परिकल्पना परीक्षण में अंश और हर की स्वातंत्र्य कोटि (degrees of freedom) का प्रयोग निम्नलिखित में से किस परीक्षण-सांख्यिकी में होता है?
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Correct answer: B. F
Explanation
The F statistic is a ratio of two variances, so it has two degrees of freedom: one for the numerator and one for the denominator (e.g., F(2, 27) in ANOVA). t and χ² have a single df; Z has none.F सांख्यिकी दो प्रसरणों का अनुपात है, इसलिए इसमें दो स्वातंत्र्य कोटियाँ होती हैं: एक अंश के लिए और एक हर के लिए (जैसे ANOVA में F(2, 27))। t और χ² में एक ही df होती है; Z में कोई नहीं।More Research Aptitude questions
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