Data analysis powerpoint
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  • 1. Data Analysis S. Hallum Jordye Bacon Elementary School 5 th Grade
  • 2. Georgia Standards
    • M5D1. Students will analyze graphs.
    • a. Analyze data presented in a graph.
    • b. Compare and contrast multiple graphic representations (circle graphs, line graphs, line plot graphs, pictographs, Venn diagrams, and bar graphs) for a single set of data and discuss the advantages/disadvantages of each.
    • c. Determine and justify the mean, range, mode, and median of a set of data.
  • 3. Terms
    • Mean : The sum of the numbers in a set of data divided by the number of pieces of data.
    • Median : The number in the middle of a set of data when the data are arranged in order from least to greatest. When there are 2 middle numbers, the median is the number that is halfway between the two middle numbers.
  • 4. Terms
    • Mode : The number that occurs most frequently in a set of numbers.
    • Range: The difference between the largest and smallest values in a numerical data set.
  • 5. Finding the Mean
    • Step 1: Add all numbers in your set of data.
    • Step 2: Divide the sum by the number of pieces of data.
    Example: Set of Data: 15, 15, 14, 16 Sum: 60 Total number of pieces of data: 4 Mean: 60 ÷ 4 = 15
  • 6. Finding the Median
    • Step 1: Put all numbers in order from least to greatest.
    • Step 2: Find the middle number.
    Example: Set of Data: 15, 15, 14, 16 Ordered: 14, 15, 15, 16 Middle Number: 15 and 15 Median: 15
  • 7. Finding the Mode
    • Step 1: Put all numbers in order from least to greatest.
    • Step 2: Find the most popular number.
    Example: Set of Data: 15, 15, 14, 16 Ordered: 14, 15, 15, 16 Mode: 15
  • 8. Finding the Range
    • Step 1: Put all numbers in order from least to greatest.
    • Step 2: Subtract the lowest number from the highest number.
    Example: Set of Data: 15, 15, 14, 16 Ordered: 14, 15, 15, 16 Range: 16 – 14 = 2
  • 9. Practice
    • http://www.quia.com/rr/51667.html
    • http://www.purplemath.com/modules/meanmode.htm
    • http://www.mathgoodies.com/lessons/toc_vol8.html
  • 10. Types of Graphs
    • Bar Graph
    • Circle Graph
    • Line Graph
    • Line Plot Graph
    • Venn Diagram
    • Pictograph
  • 11. Bar Graph
    • Definition: a graph that shows data using horizontal or vertical bars.
    • Advantages:
    • Easy to read
    • Compares multiple sets of data
    • Disadvantages
    • Not best for showing trends
  • 12. Circle Graph
    • Definition: A graph that shows data in the form of a circle.
    • Advantages:
    • Shows percentages
    • Shows how a total is divided into parts
    • Disadvantages
    • Not best for showing trends
  • 13. Line Graph
    • Definition: A graph that shows data in the form of a line.
    • Advantages:
    • Shows change over time
    • Helps you see trends
    • Disadvantages
    • Not easy to use to compare different categories of data
  • 14. Pictograph
    • Definition: A graph that displays data using symbols or pictures.
    • Advantages:
    • Compares multiple sets of data
    • Visually appealing
    • Disadvantages
    • Hard to read when there are parts of pictures.
  • 15. Line Plot Graph
    • Definition: A graph that uses symbols above a number line to display data.
    • Advantages:
    • An easy way to organize data
    • Disadvantages
    • Only good for one group of data and cannot be used to compare different categories of data or show trends.
  • 16. Venn Diagram
    • Definition: Circles that show relationships among sets.
    • Advantages:
    • Shows comparisons and contrasts easily.
    • Disadvantages
    • Does not show trends
  • 17. Interpreting Data Practice sites: http://www.bbc.co.uk/schools/ks2bitesize/maths/data/interpreting_data/play.shtml http://www.mercer.kyschools.us/mysites/jbest/?page_id=64 http://www.internet4classrooms.com/grade_level_help/skills_fifth_5th_math_data_analysis_and_probability.htm