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

The Quartile deviation (Q.D) of a normal distribution is_______.

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

The normal distribution is represented as_______

• N (μ,σ²) A
• N (n,p) B
• N (0,σ²) C
• None of these D

The probability density function has ------------------ value for every value of x.

• negative A
• positive B
• minimum C
• maximum D

The normal distribution is a bell shaped_______ distribution.

• Discrete A
• Continuous B
• Symmetrical C
• Skewed D

Normal distribution is

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

• β₁ A
• β₂ B
• β₃ C
• S_k D

All odd order moments about mean are

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

Second moment about mean is also called

• mean A
• variance B
• skewness C
• standard deviation D

The moment coefficient of skewness is

• β₁ A
• β₂ B
• S_k C
• m₃ D

If X - N (50,25), then=σ = ________.

• 3 A
• 5 B
• 25 C
• 50 D

The normal distribution is a _______.

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

P ( | Z | > a) =

• 2ø(a) - 1 A
• ø(a) B
• 2 ø (-a) C
• 1-ø(a) D

Normal distribution ranges from_______.

• 1,2,3,............∞ A
• -∞ to +∞ B
• 1,2,3,.........n C
• None of these D

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

• 2 A
• 4 B
• 3 C
• 5 D

The maximum ordinate of a normal curve is at X = ________.

• μ A
• σ B
• X̅ C
• S.D D

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

• 1.96 A
• 2.33 B
• 1 C
• 0 D

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

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