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

For normal distribution mean always lies between.

• Median and mode A
• Median and Q₁ B
• Median and Q₃ 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

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

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

• μ A
• σ B
• X̅ C
• S.D D

In a normal distribution,_____= μ + 0.64745 σ

• Q₁ A
• Q₃ B
• μ C
• σ D

In case of normal distribution maximum value of ordinate is

• μ A
• Zero B
• 
  C
• 
  D

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

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

The shape of the normal distribution is like

• J. A
• L B
• bell C
• circle D

Normal distribution is

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

• β₁ A
• β₂ B
• β₃ C
• S_k D

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

• negative A
• positive B
• minimum C
• maximum 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

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

• 2 A
• 4 B
• 3 C
• 5 D

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

• 75% A
• 50% B
• 95.45% C
• 99.73% D

P(μ-2σ < X=< μ + 2σ)=

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