Find the median of 13, 15, 12, 21, 10, 14, 12.

Correct option is B

Given:

The numbers are: 13, 15, 12, 21, 10, 14, 12.

Definition of Median:

The median is the middle value of a data set when it is arranged in ascending order. If the total number of values is odd, the median is the middle value.

Solution:

1. Arrange the numbers in ascending order:

10, 12, 12, 13, 14, 15, 21.

2. Count the number of values:

Total values = 7 (odd).

3. Identify the middle value:

The middle value is at position $$\frac{7 + 1}{2} = 4$$​

The 4th value is 13.

Final Answer:

(B) 13