Illustrative Mathematics Algebra 1 Unit 1 Lesson 7 practice EXPLAINED

Illustrative Mathematics Algebra 1 Unit 1 Lesson 7 practice EXPLAINED

NOTE: For problem 5, part b the IQR does change from 1 to 0.9 but statistically this has not a lot of meaning because is such a small change so it's equivalent to being the same. However, if you calculate them both by hand, you will see the change.

Second NOTE: Problem 3, answer C is equivalent to answer E so it is also correct. Because it's all multiplication and division the order of operations in this case does not matter.

I apologize for the mistakes, but I like to leave them in with notes so you can see how mathematics isn't always perfect. I have a degree in mathematics and have taught for years but I still make mistakes in the moment when I'm creating videos or doing problems. It's ok!