Mean, Median, Mode And Range by Mary T

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For this project, students in Mrs. Beile's learning center math class were tasked with creating a Powerpoint presentation that explained how to solve a math problem. The students were expected to select a math concept they were struggling with themselves and pretend they were explaining the concept to a friend. By going through the process, the students were able to develop mastery and reinforce the concept for themselves. Everyone did a fantastic job!

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Mean, Median, Mode And Range by Mary T

  1. 1. By Mary Terlisner
  2. 2. Getting Started… <ul><li>To start you need to know what a data set and an outlier is. </li></ul><ul><li>Data Set- a data set is a groups of numbers that are results. </li></ul><ul><li>Example: </li></ul><ul><li>1,2,4,8,9,7,8,2,3,6,4,5,7,9,8,2,4,5,3,1 is a data set. </li></ul>
  3. 3. Outlier <ul><li>Outlier- an outlier is a number that is a lot different from the other numbers in a data set. </li></ul><ul><li>Example: </li></ul><ul><li>In the data set; 1,2,3,4,5,6,7,8,9,100 </li></ul><ul><li>100 is the outlier! </li></ul>
  4. 4. Mean <ul><li>Mean-the average of a data set(all the numbers added up and divided by the number of numbers). </li></ul><ul><li>Example: </li></ul><ul><li>Find the mean of the data set; 0,1,3,1,2,3,4,5,5,4 </li></ul><ul><li>0+1+3+1+2+3+4+5+5+4 </li></ul><ul><li>10 </li></ul><ul><li>= 28 </li></ul><ul><li>10 </li></ul><ul><li>= 2.8 </li></ul><ul><li>The mean of this data set is 2.8. </li></ul>
  5. 5. <ul><li>Median- the number in the middle of an organized set of data. If there are two medians you find the mean of the two medians and that is your median. </li></ul><ul><li>Example: </li></ul><ul><li>Find the median of this data set; 0,1,3,1,2,3,4,5,5,4 </li></ul><ul><li>First we organize the data; 0,1,1,2,3,3,4,4,5,5, </li></ul><ul><li>Then we find the middle number or numbers; </li></ul><ul><li>3&3 3+3=6 6 ÷ 2 = 3 </li></ul><ul><li>3 is the median. </li></ul>
  6. 6. <ul><li>Mode- the mode is the number that occurs most in a data set. If all the numbers occur the same amount of time, then there is no mode. There can be two modes. </li></ul><ul><li>Example: </li></ul><ul><li>Find the mode of the data set; 0,1,1,2,3,3,4,4,5,5,6,7,8,8,8,8,8,8,9 </li></ul><ul><li>The mode is 8 because it occurs the most often. </li></ul>
  7. 7. <ul><li>Range- the distance between the lowest and highest numbers. </li></ul><ul><li>Example: </li></ul><ul><li>Find the range of the data set; 11,15,22,23,26,34,35,45,56,58,60 </li></ul><ul><li>60-11= 49 </li></ul><ul><li>The range is 49. </li></ul>
  8. 8. <ul><li>Here’s a quick way to remember Mean, Median, Mode, and Range. </li></ul><ul><li>Mean is mean because it has the most math. </li></ul><ul><li>Median is medium which is like middle, find the middle number. </li></ul><ul><li>Mode is most, find the number that occurs the most. </li></ul><ul><li>Range you just have to remember. </li></ul>

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