Math 7

Unit 7 Data Analysis

Lesson 7.2  Median and Range

Focus

The FOCUS section introduces the main concept that will be covered in the lesson.

Find the median and the range of a set of data.

TEXT Page 262

Read/Work through the  Focus  section at the top of page 262 in  your textbook.

Watch

Video Tutorial

Explore

Explore an idea or problem.
The exploration provides the background for the ideas presented in the lesson.

I suspect most students doing this lesson won’t have access to Cuisenaire rods,  and, because you are supposed to use them randomly,  you can’t do this using a virtual set.
These ideas will be explained in the lesson, so, unless you have Cuisenaire rods and you MUST do this,  feel free to skip it.

In the video,  I will do the experiment myself and give some ideas about what we are learning in this lesson.

Video Tutorial

Connect

Connect summarizes the math in the lesson.
A presentation of ideas connected to the lesson focus.

TEXT Page 263

Read/Work through the  Connect  section on Page 263 in your textbook.

Even if you KNOW you are going to watch the video, READING this section is still important.

Getting the same information in multiple ways can help with understanding.

Watch

Video Tutorial

Example

The Example will give you TOOLS for solving problems, and also show you that there may be different ways to approach a question.

Example

TEXT Page 264

Work through the Example  on Page 264 in your textbook.

Watch

Video Tutorial

Practice Problems

Doing Practice Problems

Practice problems reinforce the math presented in this lesson.

•	Work through the practice problems for this lesson.
	These problems are for practice, you don’t need to hand them in!
	(your teacher may assign specific questions for you to complete)

•	Use the answers in the back of the book to CHECK YOUR WORK!

•	If you make a mistake, TRY TO FIX IT!

•	If you need help or want more information, view the video solutions provided.

•	If you still need more help,  CONTACT YOUR TEACHER!

Types of Practice Problems

Assessment Focus a question that gives a good example of the kind of question you would be expected to answer after completing the lesson

Take It Further questions offer enrichment and extension.

Notes

Question 2,    The textbook answer says class A,  based just on the median, that would be correct.
But if we use the range as well,  it becomes not quite as clear which class is doing “better”

Question 4,    I didn’t do a video for this one.
You were asked to come up with your own sets of data.
The textbook gives a sample answer.
Answers may vary. For example:
a) 85, 90, 100, 100, 110, 115
b) 80, 85, 100, 100, 105, 110

Video Solution Links

Check your work for every problem you do!
If you make a mistake,  try to fix it!
Use the video solutions for more information.
If a problem still doesn’t make sense, ASK YOUR TEACHER FOR HELP!

({{"Question 1", "Question 2", "Question 3", "Question 5"}, {"Question 6", "Question 7", "Question 8", }})