Example 2: What will be the upper quartile for the following set of numbers? 26, 19, 5, 7, 6, 9, 16, 12, 18, 2, 1. ... The formula for the upper quartile formula is Q3 = ¾(n + 1)th Term.

October 30, 2025 - If there are (4n+3) data points, then the lower quartile is 75% of the (n+1)th data value plus 25% of the (n+2)th data value; the upper quartile is 25% of the (3n+2)th data point plus 75% of the (3n+3)th data point.

October 30, 2015 - For example, if the result is 7.5, then the average of the 7th and 8th terms in the data set is the upper quartile. If the result from the formula is a decimal that does not end with .5, subtract 0.25 from the result until you get a whole number or a decimal ending in .5.

Then you need to split the lower half of the data in two again to find the lower quartile. The lower quartile will be the point of rank (5 + 1) ÷ 2 = 3. The result is Q1 = 15. The second half must also be split in two to find the value of the upper quartile.

February 27, 2023 - So the lower quartile (LQ) is 4. The upper quartile is the value which is three quarters of the way into our data:

May 6, 2024 - To calculate the upper quartile, first, arrange the numbers of the data set in ascending order. Then, determine how many numbers are in the set. The formula for calculating the upper quartile is Q3 = ¾ (n +1).

The lower quartile Q1 is the median of the lower half of the data. The upper quartile Q3 is the median of the upper half of the data.

August 3, 2025 - Quartiles further break down the data set into quarters, which include a lower quartile (25% mark), median (50% mark), and upper quartile (75% mark). Calculating quartiles can be done manually using formulas or more efficiently in spreadsheets using functions like QUARTILE, allowing for quick ...

September 6, 2024 - Work the formula. There are 11 numbers in the set, so: Q3 = ¾(n + 1)th Term. Q3 = ¾(11 + 1)th Term. Q3 = ¾(12)th Term. Q3 = 9th Term. In this set of numbers (1, 2, 5, 6, 7, 9, 12, 15, 18, 19, 27), the upper quartile (18) is the 9th term, ...

June 21, 2023 - The third quartile (Q3, or the upper quartile) is the 75th percentile, meaning that 75% of the data falls below the third quartile.

August 11, 2023 - Drawing a horizontal line from the cumulative frequency axis at the value 60, across to the curve and then down to the x -axis, the upper quartile is approximately 42m (see diagram below). Forgetting to order the data set before finding the median or quartiles · The list must be in order before you start finding the key values! Stating the quartile value as the number given by the formula, rather than counting and finding that value in the data

Sometimes a "cut" is between two numbers ... the Quartile is the average of the two numbers.

The upper quartile is calculated by finding the median of the upper half of a data set. To calculate the upper quartile (also known as the third quartile, Q3), you first need to arrange your data set in ascending order.

Subtract this rank from (n + 1). This gives the rank of the upper quartile. For example, with n = 13, you have (13 + 1) − 4 = 10. With n = 24, you have (1 + 24) − 6.5 = 18.5, which tells you to average the data values with ranks 18 and 19. The quartiles themselves may then be found based ...

March 26, 2020 - Solution: The upper quartile formula is: Q3 = ¾(n + 1)th Term.

Understand the Quartile Formula and how it divides a set of observations into four equal parts. Learn how to calculate the lower, median and upper quartiles with a detailed example.