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Warm Up

Monday, January 13 th. Warm Up. Find the x and y intercepts for each equation 2x – 3y = 12 . Week at a Glance. Monday : Skewing, Frequency & Box and Whisker Tuesday: Histograms and dot plots Wednesday: Quiz Thursday: Scatterplots day1 Friday : Scatter plots day 2 . Warm Ups .

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Warm Up

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  1. Monday, January 13th Warm Up Find the x and y intercepts for each equation 2x – 3y = 12

  2. Week at a Glance Monday: Skewing, Frequency & Box and Whisker Tuesday: Histograms and dot plots Wednesday: Quiz Thursday: Scatterplots day1 Friday: Scatter plots day 2

  3. Warm Ups 10 points each day • Write down the question • Show work (if you can) • Correct answer *Use your warm ups as a second study guide 

  4. Useful Tools 1. Website: mskristaevans.wordpress.com • Daily PowerPoints • Important upcoming dates • Test information-study guide answers 2. Remind 101 To receive messages via text, text @92e82 to (470) 238-2447.

  5. EOCT Practice • One question a day • We will have a winner each week-reward will be given

  6. WARM UP – EOCT QUESTION 1 1.

  7. Friday’s Activity

  8. Two-Way Frequency Vs. Probability

  9. Frequency- just the number Probability- must divide out of some sort of total

  10. Example 1: Cameron surveys students in his school who play sports, and asks them which sport they prefer. He records the responses in the table below. What is the joint frequency of male students who prefer soccer? • Look for the row of “male” students. • Look for the column with the response “soccer”. • The joint frequency is the intersecting cell for males and soccer.

  11. Example 2 Abigail surveys students in different grades, and asks each student which pet they prefer. The responses are in the table below. What is the marginal frequency of each type of pet? • Sum the responses for bird, cat, dog and fish and fill in the bottom row of the table. • These totals are the “marginal frequencies” for this data.

  12. Example 3 What is the joint frequency of studying 0-2 hrs and scoring 51-75?

  13. #4 How many wrestlers won their home matches?

  14. # 5 How many wrestlers lost their away matches?

  15. #6 What is the percent of all matches to matches that were a draw?

  16. #7 What is the conditional frequency of away matches that were a draw to all away matches ?

  17. #8 What percent of campers like swimming to the total number of campers surveyed?

  18. PART I-Frequency Dot plots and Skewing

  19. Helpful Hint Look at the “tail” Tail to the right=skewed right Tail to the left=skewed left

  20. PART 2-How does an outlier effect the spread, center, and box plot

  21. Test Scores 80, 82, 85, 86, 92, 81, 79, 90 Create a box and whisker plot Be sure to label: Min Max Q1 Median Q3

  22. 80, 82, 85, 86, 92, 81, 79, 90 Mr. Link comes and scores a 58 on the test. Create a new box plot. • How does the median change? • How does the skewing change? • How does your Measures SPREAD change? • How does your measures of CENTER change?

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