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DAY 1

DAY 1. Unit 1- CCM3 * I will hand out & review the syllabus next Monday when I return. Statistics. A Welcome Back Ice Breaker!. Divide into pairs

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DAY 1

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  1. DAY 1

  2. Unit 1- CCM3* I will hand out & review the syllabus next Monday when I return. Statistics

  3. A Welcome Back Ice Breaker! • Divide into pairs • Find one winter holiday-related fact that you have in common. Write down the fact and the name of the person with whom you have that fact in common. “Holiday-related facts” can encompass a broad area, including traditions during the holiday, or details & opinions about holiday. Some examples are: “We travel for Christmas.”; “I got a new cell phone for Christmas.”; “Christmas is my favorite holiday.” • I will time you (< 1 minute) and tell you when it is time to move to another person. • Record & find a new fact for each person you talk to. Don’t use facts more than one time.

  4. Answer as a CLASS… 1. How many distinct holiday facts have been recorded all together (in the whole class)? • (Note: If John and Mary recorded a holiday fact, it will only be counted once. But, if Paul and Sue happened to record the same fact, it will be considered distinct since it involved two other people.)

  5. Answer in your GROUPS… 2. What if we had 30 participants? How many distinct math facts would be recorded? 3. What if we had 50 participants? How many distinct math facts would be recorded? 4. What if we had an unknown number of participants, N? How many distinct math facts would be recorded?

  6. Discuss answers as a class. If there is additional time, clean out notebooks- I would keep notes & quizzes for reference in a folder. Check out an Algebra II book (not during class)!

  7. DAY 2 Link for follow along worksheet: https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxtYXRoaWlpcmVzb3VyY2VzfGd4OjQ0OTE0MTZhZGNjNDE1ZTA

  8. This semester you will be asked & required to… • Be more independent! Meaning if you don’t know something look it up without being asked (internet, books, old notes, etc.)- you may have to use more than one resource for understanding. • Draw on previous information learned to make conclusions on new material. • Study/Review more on your own! *Remember Common Core III is the same material taught in I & II just taken to the next level, therefore, you shouldn’t be clueless since you passed both courses!

  9. Launch Compare Groups You are given the following data from three groups: 1. Find and state the mean for each group. 2. Do an individual dot plot of the data for each of the groups.

  10. 3. On the basis of the dot plots, what can you say about the three groups? Explain (in FULL sentences using details!).

  11. ExploreNew Light Bulbs or Not? The data below are the lifetimes (in hours) for 10 light bulbs from a new brand that your school is considering for use in the football stadium light fixtures: 2009, 2015, 2002, 1979, 2032, 1991, 2016, 2030, 2001, 1. Devise a plan to help the school make a decision about whether to change to the new bulbs. Explain your plan, including any information you might need. Compute any statistics on the new brand you think would help with the argument.

  12. 2. Compute the standard deviation of the lifetimes for the 10 light bulbs from the new brand? Start with finding the mean, ______.

  13. A little info on Standard Deviation… • The Standard Deviation is a number that measures how far away each number in a set of data is from their mean. • If the Standard Deviation is LARGE, it means the numbers are spread out from their mean. • If the Standard Deviation is SMALL, it means the numbers are close to their mean.

  14. The first step to finding the Standard Deviation is to find all the distances from the mean. Fill in the chart. +/- Distance from mean

  15. Next, square all the distances to turn them into positive numbers then collect the squared sum. Fill in the chart.

  16. Squared Sum = ______. Step 3: Divide by (n - 1) where n represents the amount of numbers you have. Finally, take the Square Root of the average distance. Standard Deviation = _________.

  17. Standard Deviation Equation  x = each value in the set n = the number of values ∑ = the sum across the values 2

  18. 3. The standard deviation for the lifetimes of bulbs from the brand currently in use is 40 hours. What does the standard deviation that you computed for the sample of light bulbs from the new brand tell you about how this brand might compare with the old brand?

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