2nd Year Statistics Chapter 10 Online MCQ Test for 12th Class Statistics Chapter 10 (Normal Distribution)

The mean deviation (M.D) of a normal distribution is ________.

• 4/5 σ A
• 5/4 σ B
• 2/3 σ C
• None of these D

Points of inflexion of normal curve are at

• μ and σ A
• x=μ-σ and x=μ+σ B
• μ and 2σ C
• μ = o D

In case of symmetrical distribution

• μ₁ = μ₂ = μ₃ = μ₄ A
• β₁ = β₂ B
• P₁ < P₂ C
• 
  D

• β₁ A
• β₂ B
• β₃ C
• S_k D

The normal distribution is a _______.

• Positive A
• Negative B
• Discrete C
• Continuous D

All odd ordered moments about mean are ______ in a normal distribution.

• Zero A
• Unity B
• Positive C
• Negative D

P(μ-2σ < X=< μ + 2σ)=

• 0.6827 A
• 0.9545 B
• 0.9973 C
• 0.9827 D

Normal distribution is

• unimodal A
• bimodal B
• trimodal C
• multimodal D

Total probability under the normal curve is

• 1 A
• 0 B
• -1 C
• ∞ D

The point of inflection in normal distribution are _______.

• μ - σ, μ + σ A
• μ - σ, μ + 2σ B
• μ, σ C
• None of these D

The moment coefficient of skewness is

• β₁ A
• β₂ B
• S_k C
• m₃ D

The maximum ordinance of the standard normal Curve is at Z = ______.

• 1.96 A
• 2.33 B
• 1 C
• 0 D

The moment Coefficient of kurtosis is

• β₁ A
• β₂ B
• Zero C
• m₂ D

In a normal distribution,_____= μ + 0.64745 σ

• Q₁ A
• Q₃ B
• μ C
• σ D

In a normal distribution β₁ = 0 and β₂ = __________.

• 2 A
• 4 B
• 3 C
• 5 D

All odd order moments about mean are

• unique A
• zero B
• different C
• one D

μ - 2σ to=μ + 2σ contains approximately_______ area.

• 75% A
• 50% B
• 95.45% C
• 99.73% D