## What is box plot with example?

A box and whisker plot—also called a box plot—displays the five-number summary of a set of data. The five-number summary is the minimum, first quartile, median, third quartile, and maximum. In a box plot, we draw a box from the first quartile to the third quartile. A vertical line goes through the box at the median.

## What 4 things does a box and whisker plot show?

The figure shows the shape of a box and whisker plot and the position of the minimum, lower quartile, median, upper quartile and maximum. In a box and whisker plot: The left and right sides of the box are the lower and upper quartiles.

## How is a box and whisker plot used in real life?

You can use “box and whisker plot” in the real world to when you are trying to compare something with another. For example if you want to compare which phone is worth it, you can do this by getting the average of how many people buy the better phone.

## How do you find a box and whisker plot?

The length of the upper whisker is the largest value that is no greater than the third quartile plus 1.5 times the interquartile range. In this case, the third quartile plus 1.5 times IQR is 10 + 1.5*6 = 19. The largest value that is no greater than 19 is 13, so the upper whisker will reach to 13.

## What does box plot represent?

In descriptive statistics, a box plot or boxplot is a method for graphically demonstrating the locality, spread and skewness groups of numerical data through their quartiles.

## How do you make a box and whisker plot with two sets of data in Excel?

Create a box and whisker chart
1. Select your data—either a single data series, or multiple data series. …
2. In Excel, click Insert > Insert Statistic Chart >Box and Whisker as shown in the following illustration.

## How do you find the 1st quartile?

The formula for quartiles is given by:
1. Lower Quartile (Q1) = (N+1) * 1 / 4.
2. Middle Quartile (Q2) = (N+1) * 2 / 4.
3. Upper Quartile (Q3 )= (N+1) * 3 / 4.
4. Interquartile Range = Q3 – Q1.

## How do you find the Q1 and Q2 in a box plot?

First/lower quartile (Q1) – the number below which 25% of the data in the set lies. On a box plot, Q1 is the left side of the box. Median (Q2) – the middle of the data; it splits the lower and upper 50% of the data. Q2 is indicated by a line inside the box at some point between Q1 and Q3.

## What is quartile example?

Example: 5, 7, 4, 4, 6, 2, 8

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

## How do I find the median?

Median: The middle number; found by ordering all data points and picking out the one in the middle (or if there are two middle numbers, taking the mean of those two numbers). Example: The median of 4, 1, and 7 is 4 because when the numbers are put in order (1 , 4, 7) , the number 4 is in the middle.

## How do I calculate the median?

The median is calculated by arranging the scores in numerical order, dividing the total number of scores by two, then rounding that number up if using an odd number of scores to get the position of the median or, if using an even number of scores, by averaging the number in that position and the next position.

## How do you find Q1 Q2 and Q3?

Quartile Formula:

There are four different formulas to find quartiles: Formula for Lower quartile (Q1) = N + 1 multiplied by (1) divided by (4) Formula for Middle quartile (Q2) = N + 1 multiplied by (2) divided by (4) Formula for Upper quartile (Q3) = N + 1 multiplied by (3) divided by (4)

## What is median give example?

A median is the center value of a given list of observations when arranged in an order. For example, a list of observations is 33, 55, 77, 22, 11. Arranging in ascending order, we get: 11,22,33,55,77. Hence, the median is 33.

## What is a median in math?

The median is the middle number in a sorted list of numbers and can be more descriptive of that data set than the average. The median is sometimes used as opposed to the mean when there are outliers in the sequence that might skew the average of the values.

## How do you find the median in a box plot?

The far left of the chart (at the end of the left “whisker”) is the minimum (the smallest number in the set) and the far right is the maximum (the largest number in the set). Finally, the median is represented by a vertical bar in the center of the box. Box plots aren’t used that much in real life.