## How do you find q1 and q3?

Q1 is the median (the middle) of the lower half of the data, and Q3 is the median (the middle) of the upper half of the data.

(3, 5, 7, 8, 9), | (11, 15, 16, 20, 21).

Q1 = 7 and Q3 = 16.

Step 5: Subtract Q1 from Q3.

## How do you find the lower quartile in a stem and leaf plot?

Finding Quartiles Quick and Easy –

## How do you find the lower quartile with even numbers?

How to Find Quartiles on Even Ranges : Trigonometry, Statistics

## How do I find the third quartile?

**Box and Whisker Plot**

- Quartile 1 (Q1) = (4+4)/2 = 4.
- Quartile 2 (Q2) = (10+11)/2 = 10.5.
- Quartile 3 (Q3) = (14+16)/2 = 15.

## How do you find the q1?

Q1 is the median (the middle) of the lower half of the data, and Q3 is the median (the middle) of the upper half of the data. (3, 5, 7, 8, 9), | (11, 15, 16, 20, 21). Q1 = 7 and Q3 = 16. Step 5: Subtract Q1 from Q3.

## What is the formula for calculating quartiles?

**The formula for quartiles is given by:**

- Lower Quartile (Q1) = (N+1) * 1 / 4.
- Middle Quartile (Q2) = (N+1) * 2 / 4.
- Upper Quartile (Q3 )= (N+1) * 3 / 4.
- Interquartile Range = Q3 – Q1.

## How do you find the quartile value?

Quartiles are the values that divide a list of numbers into quarters: Put the list of numbers in order. Then cut the list into four equal parts. The Quartiles are at the “cuts”

And the result is:

- Quartile 1 (Q1) = 4.
- Quartile 2 (Q2), which is also the Median, = 5.
- Quartile 3 (Q3) = 7.

## How do you find the lower quartile in a frequency table?

Numerical Measures – Median and Quartiles of a frequency table

## Does the lower quartile include the median?

Use the median to divide the ordered data set into two halves. Do not include the median into the halves. The lower quartile value is the median of the lower half of the data. The upper quartile value is the median of the upper half of the data.

## How do you find the q1 of two numbers?

Quartiles are the values that divide a list of numbers into quarters: Put the list of numbers in order.

In this case all the quartiles are between numbers:

- Quartile 1 (Q1) = (4+4)/2 = 4.
- Quartile 2 (Q2) = (10+11)/2 = 10.5.
- Quartile 3 (Q3) = (14+16)/2 = 15.

## Can median and lower quartile be the same?

Mentor: The lower quartile is the median of the first 50% of the data. And the upper quartile is the median of the last 50% of the data. If there is an even number of data points then the quartile is the average of the two middle numbers, just like when we found the median.