Math 7

Quarter 3: Week 3

MLK Jr Day - No School

Deviation from the Mean

Let's study distances between data points and the mean and see what they tell us.

calculate the mean absolute deviation (MAD) for a data set and interpret what it tells us about the situation.
Compare and contrast (in writing) distributions that have the same mean, but different amounts of variability.

1. Math Ready and Discuss TM Timer Counting Up/ New Clean/Pack Up Routine

2. Core Problems: 11-1 to 11-3

3. QUIETLY Clean up/Pack up ( 1 minute)

4. Lesson Closure (5 minutes)

Let’s compare two groups.

I can...

Icalculate the difference between two means as a multiple of the mean absolute deviation.
When looking at a pair of dot plots, I can determine whether the distributions are very different or have a lot of overlap.

Standard 7.SP.3

Need a Recap ?: MAD Recap Video

dentify the population and a sample for a question of interest.
Understand why samples may be useful in answering questions of interest. (7.SP.1)

What Makes a Good Sample?

Review when it makes sense to use mean or median as a measure of center for data.
Explain what it means for a sample to be representative of the population.
Understand that some samples represent the population better than others. (7.SP.1&2)

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