Tag: business mathematics and statistics

Quizzes (14) Questions (285)

Questions Related to business mathematics and statistics

Multiple choice business mathematics and statistics random variable and mathematical expectation discrete and continuous data random variable random variable and its types

How many times will you brush your teeth. The answer is an example of which type of variable?

  1. continuous

  2. dependent

  3. nominal

  4. discrete
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A discrete variable is a variable whose value is obtained by counting.
So, how many times will you brush your teeth is countable.

Multiple choice business mathematics and statistics random variable and mathematical expectation discrete and continuous data random variable random variable and its types

______ is not a discrete variable.

  1. average mark of a student

  2. what is your age?

  3. shoe size

  4. weight of a dog
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Weight of a dog is not a discrete variable.
Because, the weight of a dog is a continuous variable as it can take any value - for example, $2$ kg, $5$ kg, $4.2$ kg etc.

Multiple choice business mathematics and statistics random variable and mathematical expectation discrete and continuous data random variable random variable and its types

Teacher asked a student to state how many times in the last month they visited their family doctor. The answer is an example of which type of variable?

  1. continuous

  2. dependent

  3. discrete

  4. nominal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A discrete variable is a variable whose value is obtained by counting.
So, here the student can able to say how many times he visited the doctor.
Therefore, the given statement is discrete.

Multiple choice business mathematics and statistics random variable and mathematical expectation discrete and continuous data random variable random variable and its types

Count the number of students in a class is an example of ________ variable.

  1. dependent

  2. continuous

  3. nominal

  4. discrete
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Discrete variables are countable in a finite amount of time.
So, counting a number of students in a class is an example of discrete variable.
Because we can easily count the number of students in a class.

Multiple choice business mathematics and statistics random variable and mathematical expectation discrete and continuous data random variable random variable and its types

Find the discrete variable.

  1. number of chocolates in a box

  2. time taken by an athlete

  3. height of a student in a class

  4. weight of animals in zoo
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Discrete variables are countable in a finite amount of time.
So, number of chocolates in a box is an example of discrete variable.
Because we can easily count the number of chocolate in a box.

Multiple choice business mathematics and statistics random variable and mathematical expectation discrete and continuous data random variable random variable and its types

______ variables measured with enough precision can often be considered continuous for practical purposes.

  1. continuous

  2. discrete

  3. nominal

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A discrete variable is a variable whose value is obtained by counting.
So, discrete variables measured with enough precision can often be considered continuous for practical purposes.
Example: number of students absent in a class.

Multiple choice business mathematics and statistics random variable and mathematical expectation discrete and continuous data random variable random variable and its types

______ is not a continuous variable.

  1. are you a girl or boy?

  2. weight of a goat

  3. measure the height of a student

  4. time taken to complete a task
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Continuous variable has the infinite set of the data.
So, are you a girl or boy is not an example of continuous variable.