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Class of 2009  The term "measures of central tendency" is a fancy name for mean, median and mode (Schultzkie, 2007).  Mean: Average. The sum.

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Presentation on theme: "Class of 2009  The term "measures of central tendency" is a fancy name for mean, median and mode (Schultzkie, 2007).  Mean: Average. The sum."— Presentation transcript:

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6  The term "measures of central tendency" is a fancy name for mean, median and mode (Schultzkie, 2007).  Mean: Average. The sum of a set of data divided by the number of data. (Do not round your answer unless directed to do so.)  Median: The middle value or the mean of the middle two values, when the data is arranged in numerical order. Mode: The value ( number) that appears the most. It is possible to have more than one mode, and it is possible to have no mode. If there is no mode-write "no mode," do not write zero (0).

7  1. The weekly Vocabulary test scores for students in English 4A are: 80, 94, 54, 80, 49, 67 and 95. For the seven test scores find: (a) the mean (b) the mode (c) the median

8 Answer – Question 1 Mean Step One: Add all numbers: 67 80 94 52 80 49 96 Step Two: Divide answer by total number of test scores: 518 7= 74 518

9 Answer – Question 1 Mode Step One: Put the scores in order from lowest to highest. 49, 52, 67, 80, 80, 94, 95 Step Two: Find the score that is repeated The greatest number of times. 49, 52, 67, 80, 80, 94, 95

10 Answer – Question 1 Median Step One: Put the scores in order from lowest to highest. 49, 52, 59, 67, 80, 80, 94 Step Two: Find the score that is the middle. 49, 52, 59, 67, 80, 80, 94

11 Click on the screen to surf with the Mean. (Video clip not available on web due to copyright considerations.)

12 Click on the picture for a city challenge to find the mean, mode and median

13  Using the printed copy of your high school transcript, figure your GPA by semesters and summer school from 9 th grade through 11 th grade.  Open New Blank Page on Microsoft Word  Click on Insert>Picture>Chart (Office 2003)  Choose Line Graph  An Excel Spreadsheet will appear.  Label Rows 2 through 10 by Semesters and Summer school (SS-Summer School) 9-19-29-SS10-110-210-SS11-111-211-SS 3.52.74.03.12.23.61.82.6 3.8

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15  Review the graph of your Grade Point Average  Reflect on why your Grade Point Average went up or down each semester from the time you entered high school through your eleventh grade year.  Review the Reflective Essay Scoring Rubric hand-out.

16 Write an essay which includes the following: 1. Introductory paragraph with strong thesis statement Detail paragraph one – Ninth grade reflections Detail paragraph two – Tenth grade reflections Detail paragraph three – Eleventh grade reflections. Conclusion – How will your Senior year grades reflect what you have learned from previous years.

17 Schultzkie, L. (2007, December). Mean, Mode, Median. Retrieved January 21, 2009, from Regemts Exam Prep Center: http://regentsprep.org/Regents/math/mean/pmeasure.htm http://regentsprep.org/Regents/math/mean/pmeasure.htm  Bitesize. (2009, January). Retrieved January 22, 2009, from BBC:  http://www.bbc.co.uk/schools/ks2bitesize/maths/activities/ modemedianmean.shtml  Discovery Education Streaming. (2009, January). Retrieved January 22, 2009, from Discovery Education: http://player.discoveryeducation.com http://player.discoveryeducation.com


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