**Steps:**

- Step 1: Put the numbers in order.
- Step 2: Find the median.
- Step 3: Place parentheses around the numbers above and below the median. Not necessary statistically, but it makes Q1 and Q3 easier to spot.
- Step 4: Find Q1 and Q3.
- Step 5: Subtract Q1 from Q3 to find the interquartile range.

Correspondingly, how do you find the first and third quartile?

**To find the quartiles of this data set, use the following steps:**

- Order the data from least to greatest.
- Find the median of the data set and divide the data set into two halves.
- Find the median of the two halves.

What does the third quartile tell you?

Mathwords:

**Third Quartile**. For a set of data, a number for which 75% of the data is less than that number. The**third quartile**is the same as the median of the part of the data which is greater than the median. Same as 75th percentile.What is the definition of third quartile?

Q3. For a set of data, a number for which 75% of the data is less than that number. The

**third quartile**is the same as the median of the part of the data which is greater than the median. Same as 75th percentile. See also.