Algebra Room 424 Ms. Miller

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Please sign in next to your name on the sheet by the door.

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I am in my room from 12:00 - 12:30 for tutoring if you ever want extra help.

(PLEASE LET ME KNOW)

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The day’s lesson and the homework will be posted to my website by the end of each day.

www.mrsmillersmathtutoring.com

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Always feel free to email me with any questions or concerns.

jmiller1@camdencc.edu

National Voter Registration Day

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Tuesday, September 15^th @ 11 AM – 12 PM

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Room: CABS, 2^nd floor

PLEASE, let me know:

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• If I am going to fast or you don’t understand something.
• I cannot help without communication.

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• If there is a nickname you would prefer, or how you would like to be addressed
• Ex: Josie instead of Josephine

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• If something in class is bothering you.
• classmate, lighting, talking, etc

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You can tell me in class, before/after class, or send me an email

jmiller1@camdencc.edu Josephine.miller@casl.camdencc.edu

Warm Up: You have 10 minutes to work on these problems. Then, we will go over them.

Workbook page 29

9. Jared set a goal to sell 300 alarm systems in a 60-day period. At the end of the 60 days, he had averaged 4 alarms per day. Did he meet his goal?

10. Explain. Carmel received test scores of 77, 81, 95, and 91. She has 1 more test to take. In order to get an A in the class, she needs an average of 90 on the 5 tests. If the highest score Carmel can earn on the last test is 100, is it possible for her to get an A in the class? Explain your thinking.

No

• An average of 4 alarms per day for 60 day is only 240 alarms.
• 300 alarms over 60 days would be an Average of 4 alarms per day.

HOMEWORK

What would her TOTAL be if she got a perfect score on the 5^th test?

What should her TOTAL be if she wants an average of 90?

No

Even with a 100 on the 5^th test, she will not have an average of 90.

Workbook page 29

10. Explain. Carmel received test scores of 77, 81, 95, and 91. She has 1 more test to take. In order to get an A in the class, she needs an average of 90 on the 5 tests. If the highest score Carmel can earn on the last test is 100, is it possible for her to get an A in the class? Explain your thinking.

HOMEWORK

Find her average IF she earned 100 in the last test.

No

Even with a 100 on the 5^th test, she will not have an average of 90.

Workbook page 30

HOMEWORK

Find the median.

Find the mode.

Workbook page 31

Sometimes, one or more data values are very large or very small compared to the other values in the set. These extreme values are called outliers.

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Outliers don’t affect the median as much as they affect the mean.

Workbook page 31

Find the mean of the 5 rings.

Find the median of the 5 rings.

Notice in the example above that while the mean may not be a typical value, the median is.

First, identify the outlier. Then find the mean and the median of the data set.

Workbook page 31

First, identify the outlier. Then find the mean and the median of the data set.

Workbook page 31

Solve.

Workbook page 31

9. The following data shows the number of sales made in a month by 8 out of 9 salespeople.

45 34 31 48 37 43 32 42

The 9^th employee made 66 sales in that month. By how much does the mean change when the 9^th value is added?

10. Explain. The data below gives the margin of victory for a high school football team’s games in a season.

3 7 21 14 3 17 30 3

Do you think the mean, median, or mode is the most reliable typical value for the data? Explain your reasoning.

The average before: 39

The average after: 42

Mean: 12.25

Median: 10.5

Mode: 3

This is your interpretation of the data.

What do YOU think?

3 3 3 7 14 17 21 30

Tonight’s homework:

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Page 31, number 7 & 8