Arrange the following pairs of standard deviation (σ) and total number of samples (n) pertaining to different sampling distributions in the decreasing order of their standard error.
A. σ = 1.6, n = 16
B. σ = 1.5, n = 25
C. σ = 0.6, n = 36
D. σ = 1.4, n = 49
Choose the correct answer from the options given below:विभिन्न प्रतिदर्श वितरणों से संबंधित मानक विचलन (σ) और प्रतिदर्शों की कुल संख्या (n) के निम्नलिखित युग्मों को उनकी मानक त्रुटि (standard error) के घटते क्रम में व्यवस्थित कीजिए।
A. σ = 1.6, n = 16
B. σ = 1.5, n = 25
C. σ = 0.6, n = 36
D. σ = 1.4, n = 49
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Correct answer: B. A, B, D, C
Explanation
Standard error = σ/√n. A = 1.6/4 = 0.40; B = 1.5/5 = 0.30; C = 0.6/6 = 0.10; D = 1.4/7 = 0.20. Decreasing order: A, B, D, C.मानक त्रुटि = σ/√n। A = 1.6/4 = 0.40; B = 1.5/5 = 0.30; C = 0.6/6 = 0.10; D = 1.4/7 = 0.20। घटता क्रम: A, B, D, C।More Research Aptitude questions
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