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

Var (3x + 2)

• 3 Var(X) + 2 A
• 3 Var X B
• 9 var (x) + 2 C
• 9 var (x) D

Random variable is also called ___________.

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

The simplest form of the continues distribution is the

• Skewed distribution A
• Kurtic distribution B
• Binomial distribution C
• Uniform distribution D

The probability of red card out of 52 cards is.

• 1/4 A
• 1/2 B
• 4/52 C
• zero D

E(x - μ) is equal to:

• E(x) A
• zero  B
• μ C
• X - μ D

The coins are tossed, the porbability of two tails is euql to.

• 1/2 A
• 1/4 B
• 3/4 C
• 1 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

For a constant K ,the variance of K.

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

the term 'event' is used for.

• Time A
• Subaet of the sample space B
• Total number of outcomes C
• Probability D

Events with equal probabilities are called.

• Mutually exclusive events A
• Exhauative events B
• Eqauily likely events C
• Simple events D

• 4/10 A
• 2/10 B
• 1/10 C
• 0 D

The simple probability of occurrence of an event in called the.

• Joint probability A
• Conditional probability B
• Marginal probability C
• Subjective probability D

Which one is not an example of random experiments.

• A coin is tossed and the outcome is either a head or a tail A
• A six sided aid is rolled B
• All medical insurance clams received by a company in a given year. C
• Some one of person will be admitted to a hospital emergency room during any hour. 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

The probability of continuous random variable at x = a is__________.

• One A
• Zero B
• Between C
• More then one D

a measure of the chance that an uncertain event will occur.

• An experiment A
• An event B
• A probability C
• A trail D

Is the tossing of two perfect coins the probability at least one head occur is.

• 1/4 A
• 1 B
• 1/2 C
• 3/4 D