Data Management. Interpreting Data. Learning Goals . Tables, pictographs, bar graphs, and circle graphs each show data in an organized way. The title of the graph tells you what data are displayed. Data presented in graphs, and tables can be used to make inferences and draw conclusions.
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What things could the principal ask the students at this school to help her make decisions?
Range tells how spread out the numbers in a set of data are. It is found by subtracting the least value (smallest number) from the greatest value (largest number).
2, 5, 11, 15, 20
The range is 18
Inference: An inference is a conclusion we reach by reasoning. It is the act of coming to a logical conclusion without actually eye witnessing or having first hand knowledge of certain events.
1. The baby was asleep upstairs in his bed. Suddenly, I heard a loud, "THUMP!" and he began crying hysterically. I ran upstairs because I inferred that he fell out of bed.
2. In third grade, you cannot be promoted to fourth grade unless you pass the final exam. My classmate said she was going back to third grade again. I know she's got o.k. grades, so inferred that she failed her final exam.
3. Just because the famous actor was seen in a jewelry store, all the tabloids inferred he's going to ask his singer girlfriend to marry him.
Ani’s school raised funds for charity. She graphed some of the data.
What does a bar graph need in order for us to be able to interpret it? Pie Graph?
a) Which two rooms together raised about the same amount as Room 6?
2. Use the circle graph.
a) Which fundraiser raised the most money? Explain
b)Which fundraisers raised about the same amount of money?
c) Use the answer to question 1b to estimate the amount raised:
• by the Bike-A-Thon
• by all the fundraising activities together