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## Algebra 1 (Eureka Math/EngageNY)

### Course: Algebra 1 (Eureka Math/EngageNY)>Unit 2

Lesson 2: Topic A: Lesson 1: Box plots and shape

# Worked example: Creating a box plot (odd number of data points)

AP.STATS:
UNC‑1 (EU)
,
UNC‑1.L (LO)
,
UNC‑1.L.1 (EK)
,
UNC‑1.L.2 (EK)
CCSS.Math:
Learn how to create a box plot. The data set used in this example has 11 data points.

## Want to join the conversation?

• can you give me some practice problems? what happened to those?
• me: how do i do this? Sal: hold my cup.
• wait for real?
(1 vote)
• i love math
• Good for you! :)
• I still don't really understand how to create box plots. Can someone help me understand please.
• 1) Order numbers from least to greatest
2) Find median, if there is an even number of values take the mean of the middle 2
3) Q1 is the middle value between median and lowest value. If there is an even number of values in between median and lowest value, then take mean of the middle 2. Do the same with the upper half to find Q3.
4) Draw it out over a number line
• cant understand what exclude the median means
• When you calculate the 1st and 3rd quartile values, count after the median to the endpoint.

In the even number example, you start counting all the numbers in each half which includes 7 numbers for this example. So you find the middle of that grouping.

in the odd number of objects example, the median is an actual number. When counting out the quartile, you ignore that one
• Whatever happened to the exercise shown is the video? It looks great practice for this skill!
• I was wondering too! I wish that Khan was still set up like that...
• Why do you show examples before defining what is being explained?
You jump right into a box-and-whisker plot example without even a brief explanation of what the box-and-whisker plot is.
Having watched the example, it is a simple concept and the example was enough to explain it - still a brief summary before launching into an example would be nice.