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Which of the following variables are discrete ? 1. Size of shoes, 2. Number of pages in a book, 3. Distance travelled by a train, 4. Time
  • a)
    2 and 4
  • b)
    1 and 3
  • c)
    1 and 4
  • d)
    1 and 2
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following variables are discrete ? 1. Size of shoes, 2. N...
Discrete variables are those that can only take on specific, distinct values. They cannot take on any value between two specific points.

In the given options, the following variables are discrete:

1. Size of shoes - This is a discrete variable as shoe sizes come in specific, whole numbers such as 6, 7, 8, and so on. There are no values between 6 and 7 or 7 and 8, etc.

2. Number of pages in a book - This is also a discrete variable as the number of pages in a book can only be a whole number, such as 100, 200, 300, etc.

The following variables are not discrete:

3. Distance travelled by a train - This is a continuous variable as the distance travelled by a train can take on any value between two specific points, such as 10.5 miles, 15.3 miles, etc.

4. Time - This is also a continuous variable as time can take on any value between two specific points, such as 2:30 pm, 2:31 pm, etc.

Therefore, the correct answer is option D, which includes variables 1 and 2, both of which are discrete variables.
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Community Answer
Which of the following variables are discrete ? 1. Size of shoes, 2. N...
Option D us correct...
bcoz, they are fixed numbers increasing in a particular amount....
while time and distance...
are not fixed integer...
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