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Unit 5 · Mathematical Reasoning and Aptitude Paper 1 · 26 June 2025 Morning

Match List - I with List - II:
List - I
[Population mean (μ) and (1/N)Σxi2]
List - II
[Population standard deviation (σ)]
A. μ = 9, (1/N)Σxi2 = 117I. 10
B. μ = 10, (1/N)Σxi2 = 200II. 4
C. μ = 11, (1/N)Σxi2 = 202III. 6
D. μ = 12, (1/N)Σxi2 = 160IV. 9
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए:
सूची - I
[समष्टि माध्य (μ) तथा (1/N)Σxi2]
सूची - II
[समष्टि मानक विचलन (σ)]
A. μ = 9, (1/N)Σxi2 = 117I. 10
B. μ = 10, (1/N)Σxi2 = 200II. 4
C. μ = 11, (1/N)Σxi2 = 202III. 6
D. μ = 12, (1/N)Σxi2 = 160IV. 9
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: C. A-III, B-I, C-IV, D-II

Explanation

σ² = (1/N)Σxi² − μ². A: 117 − 81 = 36, σ = 6 (III). B: 200 − 100 = 100, σ = 10 (I). C: 202 − 121 = 81, σ = 9 (IV). D: 160 − 144 = 16, σ = 4 (II). Hence A-III, B-I, C-IV, D-II.σ² = (1/N)Σxi² − μ²। A: 117 − 81 = 36, σ = 6 (III)। B: 200 − 100 = 100, σ = 10 (I)। C: 202 − 121 = 81, σ = 9 (IV)। D: 160 − 144 = 16, σ = 4 (II)। अतः A-III, B-I, C-IV, D-II।

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