Graphing and Analyzing Data Making Predictions Drawing Conclusions Making Inferences Lucys Lemonade Stand 35 Glasses of Lemonade Sold How many glasses of lemonade did Lucy sell in Week 3? In which week did Lucy sell the most glasses of lemonade? In which week did Lucy sell the least glasses of lemonade? Lucys Lemonade Stand 30 25 20 15 10 5 0 Week Week Week Week 1 2 3 4 Beach Erosion Predictions

Based on the information in this line graph, which of the following statements would be the best prediction? Based on this data, there will most likely be 2 inches of Inches erosion in the year 2000. Based on this data, there will most likely be no erosion in the year 2000. Based on this data, there will most likely be 6 inches of erosion in the year 2000. Explain. 9 8 7 6 5 4 3 2 1 0 Beach Erosion . . . . .

1995 1996 1997 1998 Year 1999 2000 Spelling Test Grades Jeans spelling test for the 2 X X X X X X X X X X X X X 75 80 85 90 95 nd

nine weeks X 100 Based on this line plot, what grade would Jean most likely make on her next spelling test? a. b. c. d. F D or C C or B B or A Spelling Test Grades Jeans spelling test for the 2 X X X X X X X X X X

X X X 75 80 85 90 95 nd nine weeks Based on this line plot, what grade would Jean most likely make on her next spelling test? X 100 d. B or A Hectors Taco Shop Sunday Saturday Friday 900 800

700 600 500 400 300 200 100 0 Thursday Hector opens his taco shop 4 days a week. The graph shows the money he made last week. If Hector has to close his shop either Thursday, Friday, Saturday, or Sunday, what day should he close it? Why? Hectors Taco Shop Amount of Money Earned in Dollars Making Inferences: Use the observable data in the graph to make inferences. Hectors Taco Shop Sunday Saturday Friday

900 800 700 600 500 400 300 200 100 0 Thursday Hector opens his taco shop 4 days a week. The graph shows the money he made last week. On which night should Hector have the most food prepared? Why? Hectors Taco Shop Amount of Money Earned in Dollars Making Inferences: Use the observable data in the graph to make inferences. Making the Grade! Number of Students Making all As in 4th Grade Double Bar Graph In which quarter did the boys and girls have the same

number of As? Using your inference skills, which quarter would you infer was the most difficult quarter for the students? Why? 40 # of Students Making all As Which group, boys or girls, had the most As? 35 30 25 20 Boys Girls 15 10 5 0 1st 2nd 3rd 4th Qtr Qtr Qtr Qtr Television Conclusions Number of Hours Students Watch TV On Weekends Hours 20 16 12 8 4 0

6 7 Students Age 8 9 10 11 Make conclusions about students ages and the number of hours they watch television on the weekends. Example: The older the students are, the more hours they watch television on the weekends. Making Conclusions A VERAGE M ONTHLY T EMPERATURES 85 80 75 San Francisco, CA Wichita, KS

70 65 60 55 50 45 40 35 30 25 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Using the data in this double bar graph, make a conclusion statement about the average monthly temperatures in the summer months. Using the data in this double bar graph, make a conclusion statement about the average monthly temperatures in the winter months. Comparing Graphs to Make Conclusions Using the data in these two graphs, are the following statements true or false conclusions? 4th Graders Who Bought Milk 60 55 50 45 40 1 2 3 4 5

Day 5th graders always buy more milk than 4th graders. Both 4th and 5th graders increase their milk purchases as the days progress. 6 The day the 4th graders bought the most milk is also the day the 5th graders bought the least amount of milk. The day the 5th graders bought the most amount of milk is also the day the 4th graders bought the least milk. th 5 Graders Who Bought Milk 60 55 50 45 40 1 2 3 4 5

Day 6 Comparing Graphs to Make Conclusions Using the data in these two graphs, are the following statements true or false conclusions? 4th Graders Who Bought Milk 5th graders always buy more milk than 4th graders. 60 55 50 45 40 1 2 3 4 5 Day Both 4th and 5th graders increase their milk purchases as the days progress. 6 5th Graders Who Bought Milk

60 40 1 2 3 4 5 Day 6 FALSE The day the 4th graders bought the most milk is also the day the 5th graders bought the least amount of milk. 55 50 45 FALSE FALSE The day the 5th graders bought the most amount of milk is also the day the 4th graders bought the least milk. TRUE Nowpractice your own data analysis!

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