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

P(μ-2σ < X=< μ + 2σ)=

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

The moment coefficient of skewness is

• β₁ A
• β₂ B
• S_k C
• m₃ D

For normal distribution mean always lies between.

• Median and mode A
• Median and Q₁ B
• Median and Q₃ C
• None of these D

• β₁ A
• β₂ B
• β₃ C
• S_k D

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

In case of normal distribution maximum value of ordinate is

• μ A
• Zero B
• 
  C
• 
  D

Normal distribution is

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

The normal distribution is --------------------distribution.

• positively skewed A
• negatively skewed B
• symmetrical C
• peaked D

If X - N (50,25), then=σ = ________.

• 3 A
• 5 B
• 25 C
• 50 D

The shape of the normal distribution is like

• J. A
• L B
• bell C
• circle D

In case of normal distribution the area to the left of the mean and area to the right of the mean is

• positive  A
• negative B
• equal C
• unequal D

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

• 75% A
• 50% B
• 95.45% C
• 99.73% D

All odd order moments about mean are

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

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

• Zero A
• Unity B
• Positive C
• Negative 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

The normal distribution is a _______.

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

The total area under the normal curve is________.

• Zero A
• Equal B
• Unity C
• True D