First Year ICS Statistics Chapter 7 Online MCQ Test (Random Variables)

The range of probability is between

• 0 to 2 A
• -1 to +1 B
• 0 to 8 C
• 0 to 1 D

• y₁ = y₂ A
• Y₁ > y₂ B
• 
  C
• None of these D

The probability of getting one red ball from a bag constaining 4 red, 3 white and 3 black balls is.

• 3/10 A
• 1/5 B
• 2/5 C
• 1/2 D

F (+∞) is always equal to:

• 0 A
• Two B
• One  C
• None of these D

A set of numerical values assigned to a sample space is called.

• Random sample A
• Random variable B
• Random numbers C
• Random experiment D

Tossing two dice possble sampes are.

• 2 A
• 6 B
• 12 C
• 36 D

A student soved 25 questions from first 50 questios of a book to be solved. The prob, that he will solve the remaining all questions.

• 0.25 A
• 0.51 B
• 1 C
• 0 D

Which is the impossible event when a dice is rolled.

• 5 or 6 A
• 6 or 7 B
• 2 or 3 C
• 1 D

Random variable is also called ___________.

• Chance stochasitc A
• Coverges  B
• Random C
• None of these D

The sum of probabilities of events of a sample space is always.

• Equal A
• Discrete B
• Continuous C
• Always greater then oen D

The numbered balls are paced in an urn, Numbers 1- 4 are red and numbers 5 -10 are blue. the probability that a ball drawn at random from the run is blue is.

• 0.1 A
• 0.4 B
• 0.6 C
• 1.0 D

If mean = 25 and variance is also 25, then coefficient of variation is

• 100% A
• 25% B
• 20% C
• 10% D

The probability of red card out of 52 cards is.

• 1/4 A
• 1/2 B
• 4/52 C
• zero D

Coefficient  of variation (C.V) is given below

• Mean /S.D x10 A
• Mean/S.D x 100 B
• S.D/Mean x 100  C
• S.D/ Mean  D

When two coins are tossed simultaneously, P (one head ) is.

• 1/2 A
• 1/4 B
• 3/4 C
• 1.0 D

The probability of a continuous random variable at x = a is ---------------

• One A
• Zero B
• Between 0 and 1 C
• More than one D

The result of no interest of an experiment is called.

• Contstant A
• even B
• Failure C
• Success D