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

For a constant K ,the variance of K.

• Zero A
• A^-2 B
• K C
• None of these D

probability distribution of a continuous random variable can be presented by.

• Formula  A
• Curve B
• Tabular form C
• None of these
  
  
  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

A probability function is _________ function.

• Mathematical A
• Mathematical expectation B
• Converges C
• None of these D

When a pair of dice is rolled, the sum of upperemost dots vary from.

• 0 to 10 A
• 1 to 11 B
• 2 to 19 C
• 2 to 12 D

• 8 A
• 0 B
• 1/8 C
• 3 D

The probability of drawing a king of spade from a pack of 52 cards is.

• 1/4 A
• 1/13 B
• 1/26 C
• 1/52 D

When two dice are rolled, the maximum totla on the two faces of dice will be.

• 2 A
• 6 B
• 12 C
• 36 D

What is the probability that a value chosen at random from a particular population is larger than the median of the popultion.

• 0.25 A
• 0.5 B
• 1.0 C
• 0.67 D

The Area of trapezoid is equal to:

• sum of paralled sides x base A
• sum of paralled sides x base/2 B
• 2 x base x sum of paralled side  C
• Sum of paralled sides x base/4 D

For a constant k, the variance of k is

• zero A
• k² B
• k C
• none of these D

The result of no interest of an experiment is called.

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

the collection of all possible outcome of a random experimnet is called.

• Sample point A
• Sure event B
• sample event C
• simple event D

A lettter is chosen at random from the word STATITICS , The probability of getting a vowel is.

• 1/5 A
• 3/10 B
• 1/2 C
• 2/5 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

For discrete random variable 'X' the expectation of X I-e E(x) is equal to:

• Σp(x) A
• Σxp(x) B
• Σx²p(x) C
• One D

F(-∞) is always equal to

• Zero A
• One B
• Two C
• Negative one D