April 10 and 11 Mean Absolute Deviation.notebook April 10, 2018

4.

Tuesday, April 10, 2018 Warm Up

1) Molly shot 20 baskets in 4 minutes. Nico shot 42 baskets in 6 minutes. How many more baskets did Nico shoot per minute? RP.2

2) Davis printed 24 photos in 8 minutes. How many photos did he print per minute? Write it as a unit rate. RP.2

3) Using x as the variable, write the inequality graphed on the number line. 6.EE.8

2 more baskets 3 photos in a minute

     x < ­9 c) 20

1 2

3 4

SP.3

April 10 and 11 Mean Absolute Deviation.notebook April 10, 2018

6.SP.5

Summarize numerical data sets in relation to their context, such as by: a. Reporting the number of observations. b. Describing the nature of

the attribute under investigation, including how it was measured and its units of measurement. c. Giving quantitative measures of center (median and/or mean) and variability (interquartile range and/or mean absolute

deviation), as well as describing any overall pattern and any striking deviations from the overall pattern with reference to the context in which the data were gathered. d. Relating the choice of measures of center and variability to the shape of the data distribution and the

context in which the data were gathered.

SWBAT find the mean absolute deviation by finding the mean of the data set, the difference from each point, and then the average of the differences.

April 10 and 11 Mean Absolute Deviation.notebook April 10, 2018

Review....

With your partner, find the mean of the following set:

What do you think Mean Absolute Deviation means?

April 10 and 11 Mean Absolute Deviation.notebook April 10, 2018

Teacher Input Mean Absolute Deviation

Steps:1. Find the mean:

2. Find the distance between each data value and the mean:

3. Find the mean of the those distances:

April 10 and 11 Mean Absolute Deviation.notebook April 10, 2018

Steps:1. Find the mean:

2. Find the distance between each data value and the mean:

3. Find the mean of the those distances:

Teacher ModelingCritical Thinking Questions:• What is the mean of the set?• What is the difference between the mean and each

point?• What is the mean of the differences?

33.00 + 24.29 + 22.60 + 20.63 + 16.505

Mean: ________

0.45 + 0.44 + 0.43 + 0.41 + 0.415

Mean: ________

April 10 and 11 Mean Absolute Deviation.notebook April 10, 2018

Steps:1. Find the mean:

2. Find the distance between each data value and the mean:

3. Find the mean of the those distances:

Collab. Practice Critical Thinking Questions:• What is the mean of the set?• What is the difference between the mean and each

point?• What is the mean of the differences?

88 + 77 + 65 + 70 + 65 + 72 + 95 + 80 + 106 + 6810

Mean: 78.6

9.4   1.6  13.6  8.6 13.6  6.6 16.4  1.4   27.4     10.6

9.4 + 1.6 + 13.6 + 8.6 + 13.6 + 6.6 + 16.4 + 1.4 + 27.4 + 10.610

M.A.D.: 10.92

April 10 and 11 Mean Absolute Deviation.notebook April 10, 2018

Critical Thinking Questions:• What is the mean of the set?• What is the difference between the mean and each

point?• What is the mean of the differences?

Independent Practice

Find the MAD of each set by using the steps given in your notes.

You may work with a partner and use a calculator.