Data Management Learning Goals:

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Data Management Learning Goals:

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Presentation transcript:

Data Management Learning Goals: Interpret and evaluate data in tables and graphs; Draw labelled graphs by hand and with a computer; Find the mean, median, and mode; Design and conduct a survey

Circle Graph Displays data using a circle divided into sectors. We use a circle graph to show how data represent portions of one whole or one group.

Bar Graph Displays data by using bars of equal width on a grid. The bars may be vertical or horizontal. What do you think the graphs are representing?

Pictograph Uses pictures and symbols to display data; each picture or symbol can represent more than one object; a key tells what each picture represents.

Broken Line Graph A graph showing data points joined by line segments to show trends over time.

Continuous Line Graph A graph in which points on the line between the plotted points also have meaning.

Scatter Plots A graph of data that is a set of points.

Inference An inference is a conclusion we reach by reasoning.

Sample Question #1 Mr. Godina teaches math to 23 Grade 5/6 students. He ordered the marks his students received from the least to the greatest. He wanted to display these data in a bar graph. There were too many pieces of data to graph each mark separately. First, he grouped the marks into equal intervals. (Define) 54 55 58 61 63 66 67 71 72 74 76 77 78 79 81 86 87 88 91 95 99

Marks # of Students 54 55 58 61 63 66 67 71 72 74 76 77 78 79 81 86 87 88 91 95 99

Sample Question #2 Jackie and Vidhu recorded the average monthly temperatures in their towns for 8 months. May June July Aug. Sept. Oct. Nov. Dec. Jackie’s town 13C 18C 23C 20C 15C 9C 2C 0C Vidhu’s town 21C 14C 5C What kind of graph should we display the data for each town on a line graph? Circle, Bar, Line, Pictograph, Scatterplots? Should we put both sets of data on the same grid? Should we use a different colour for each town? Is the average monthly temperature in Vidhu’s town always higher than in Jackie’s town? How can you tell this from the graph? Write a statement about what the graph shows for each town. Write two questions that can be answered using your graph.