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# Data analysis powerpoint

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### Transcript

• 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 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.
• Compares multiple sets of data
• Not best for showing trends
• 12. Circle Graph
• Definition: A graph that shows data in the form of a circle.
• Shows percentages
• Shows how a total is divided into parts
• Not best for showing trends
• 13. Line Graph
• Definition: A graph that shows data in the form of a line.
• Shows change over time
• Helps you see trends
• Not easy to use to compare different categories of data
• 14. Pictograph
• Definition: A graph that displays data using symbols or pictures.
• Compares multiple sets of data
• Visually appealing
• 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.