2. created by Judith Self

3. Organizing Data by:  Using Line Plots  Describing Data (mean, median,mode, and range)  Making Charts or Graphs(bar graphs,circle graphs,pictographs,line graphs)

4. Line Plots  Line plots are diagrams that organize data on a number line  If your data is numerical, one way to show it would be with a line plot

5. Here’s a way to make a line plot.  Find the least and the greatest numbers in your set of data for your line plot.  Choose a sequence that will fit your data.( arrange the numbers by 2’s, 5’s etc.what ever works best for your data)  Put an x on the line plot to represent your data  Write a title for your line plot.

6. Describing data  Mean  Median  Mode  Range

7. Mean/Average  To find the mean or average of a set of data you first :  Add the numbers  Count the number of data  Divide the total of the numbers by the number of data.  6,4,6,5,7,7,4,9=48  There are 8 sets of data  Divide 48 by 8 = 6  To check, 8 x 6= 48

8. Median  The median number of a set of data is the number found in the middle.  Arrange your data in order from least to greatest to find the middle number. Sometimes you will have two middle numbers. 44 44 55 66 66 77 77 99

9. Mode  The mode of a set of data is the number that occurs most often in the data.  You may have more than one mode.  4,6, and 7 are your modes in this set of data.

10. Range  The range of a set of data is found by subtracting the least number from the greatest number.  9 – 4 = 5  In this set of data the range is from 4 to 9 with the exact range of 5.

11. Making Charts and Graphs  Bar graphs are another way to show data.  Double bar graphs help you to compare data.

12. Line graphs  Line graphs are good for showing changes in data over time when working with dates.  Double line graphs can help you show even more data and compare data.

13. Circle graphs/Pie Charts  Circle or pie charts are another way to show data, and compare data to percentages or fractions of a whole.

14. Pictographs  Pictographs are often used to show data in newspapers and magazines because they get your attention.  Each picture represents a specific number of data.

15. In conclusion  Organizing data makes it easier to read and understand.  Using graphs and charts helps to get the attention of your audience  Charts, line plots and graphs are ways to organize data so it is useful to you.  Comparing data is easier when it is clear and specific.