Mean MCQ Quiz in मराठी - Objective Question with Answer for Mean - मोफत PDF डाउनलोड करा

Last updated on Apr 10, 2025

पाईये Mean उत्तरे आणि तपशीलवार उपायांसह एकाधिक निवड प्रश्न (MCQ क्विझ). हे मोफत डाउनलोड करा Mean एमसीक्यू क्विझ पीडीएफ आणि बँकिंग, एसएससी, रेल्वे, यूपीएससी, स्टेट पीएससी यासारख्या तुमच्या आगामी परीक्षांची तयारी करा.

Latest Mean MCQ Objective Questions

Top Mean MCQ Objective Questions

Mean Question 1:

The mean life of a light bulb whose life X [hours] has the density f(x) = 0.001 e-0.001x (x ≥ 0) will be

  1. 100
  2. 5000
  3. 500
  4. 1000

Answer (Detailed Solution Below)

Option 4 : 1000

Mean Question 1 Detailed Solution

Explanation:

f(x) = 0.001 e-0.001x, x ≥ 0

\({\rm{Mean\;}}\left( \mu \right) = \mathop \smallint \nolimits_0^\infty x.f\left( x \right).dx\)

\(\mu = \mathop \smallint \nolimits_0^\infty x\left( {0.001} \right){e^{ - 0.001x}}.dx\)

\(\mu = \left( {0.001} \right)\left[ {\frac{{x.{e^{ - 0.001x}}}}{{ - 0.001}} - \frac{{1.{e^{ - 0.001x}}}}{{{{\left( {0.001} \right)}^2}}}} \right]_0^\infty \)

\(\mu = \left( {0.001} \right)\left[ {0 - \left( { - \frac{1}{{{{\left( {0.001} \right)}^{}}}}} \right)} \right] = \frac{1}{{0.001}}\)

∴ μ = 1000 → mean life

Mean Question 2:

Which of the following measures central tendency most appropriately.

  1. Mean

  2. Median

  3. Mode

  4. Any one of them

Answer (Detailed Solution Below)

Option 4 :

Any one of them

Mean Question 2 Detailed Solution

Mean, Mode and Median are known as Measure of Central Tendency parameters whereas Variance and Standard Deviation are known as measure of dispersion or Variability.

Mean Question 3:

If \(\rm M(x) = 2,\) where \(\rm M\) implies mean.

Then the value of \(\rm M(4x – 2)\) is

  1. \(\rm 2\)

  2. \(\rm 8\)

  3. \(\rm 6\)

  4. \(\rm 10 \)

Answer (Detailed Solution Below)

Option 3 :

\(\rm 6\)

Mean Question 3 Detailed Solution

If \(\rm M(x) = 2,\)

\(\rm Then\ M(ax + b) = a M(x)+b \\= 4 × 2 -2= 8-2=6\)

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