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Unit 2 · Research Aptitude Paper 1 · 3 January 2026 Morning

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
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:

Pick an option to check yourself, or open the answer below.

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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।

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