Discrete variable

Chance variable

Both (a) & (b) but not (c)

Stochastic variable

Greater than zero

Equal to zero

Less than zero

0 to 1

None of these

An interval of values

Always one of the values that the random variable can assume

Always an integer

Both (b) and (c)

A probability function

A probability density function

A density function

A probability function

A distribution function

A density function

A probability density function

None of these

0, 1, 2, 3

1, 2, 3

1, 3, 3, 1

Fixed variable

Variable

Mathematical variable

Random variable

Chance Variable

Constant

Stochastic variable

Both (a) and (b)

{0, 1, 2, … 9}

{1, 2, 3, …. 10}

{0, 1, 2, … }

{0, 1, 2, …. 10}

Both (a) and (b)

Programmable calculators

Ordinary calculators

By use of digital computers

Use of random numbers table

Rotating or spinning numbered wheels

All of these

Drawing cards from numbered cards

Both (a) and (b)

None of these

Mechanically

Manually

$\frac{1}{4}$

$\frac{4}{52}$

Zero

$\frac{1}{2}$

The probability of rolling a ‘5 or 6’ is higher than the probability of rolling a ‘3 or 4’

The probability of rolling a number greater than ‘1’ is 1 – P(‘1’ is rolled)

Both (a) and (b)

The probability of rolling a ‘3’ is 1 – P(1, 2, 4, 5 or 6 is rolled)

$\frac{1}{16}$

$\frac{1}{256}$

$\frac{1}{169}$

$\frac{1}{4}$

$\frac{3}{4}$

$\frac{1}{4}$

$\frac{1}{2}$

1.0

$\frac{(A\cap B)}{P(B)}$

$\frac{P(A\cap B)}{P(B)}$

$\frac{P(A\cap B)}{(A)}$

$\frac{(A\cap B)}{B}$

3

4

1

24

0

None of these

1/5

5

None of these

Mutually Exclusive

Exhaustive

Equally likely