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TRANSCRIPT
Data Management Test“What to know”
What is on the Test?
Graphing› Pictographs› Bar Graphs› Double Bar Graphs*No line graphs (reserved for our Stock Assignment)
Mean and Mode Trends and Interpreting Graphs
Graphing
You need to know the Elements of a good graph …
Sample Question: What is wrong with this bar graph? Correct the mistakes and create a good
graph using all the proper elements.
Graphing
You need to know how to use data to create a bar graph and a double bar graph.
Sample Question …
Use the data below to create a proper bar graph.
Year Bonanza Fundraising
2007
$687
2008
$777
2009
$841
2010
$654
2011
$741
2012
$710
2013
$781
Sample Question … Look at the data below. Use it to create
double bar graph. Doug Gilmour’s Career as a Toronto Maple Leaf
Regular Season PlayoffsSeason Team Games Goals Assist Points Games Goals Assist Points
1991-92 Toronto Maple Leafs 40 15 34 49 0 0 0 0
1992-93 Toronto Maple Leafs 83 32 95 127 21 10 25 35
1993-94 Toronto Maple Leafs 83 27 84 111 18 6 22 28
1994-95 Toronto Maple Leafs 44 10 23 33 7 0 6 6
1995-96 Toronto Maple Leafs 81 32 40 72 6 1 7 8
1996-97 Toronto Maple Leafs 61 15 45 60 0 0 0 0
Graphing
You need to know how to make a pictograph
Sample Question …
Use the data below to create a pictograph.
Explain your scale.Year Grad Trip Cost
2007
$190
2008
$220
2009
$200
2010
$240
2011
$225
2012
$220
2013
$220
Mean You need to know how to calculate the. The Mean is the average of a group of
numbers. 2, 6, 8, 4, 4, 0
To calculate, add up the numbers in the group: 2+6+8+4+4+0= 24 and divide by the number of numbers in the group 24 divided by 6 = 4.
The mean is 4
Sample Question
What is the mean of each data group? Explain how you know.
1. 2, 3, 42. 1, 2, 5, 4, 33. 5, 5, 1, 1, 0, 64. 10, 10, 15, 25, 40
Mode The mode is the number that occurs
the most often in a group of data. 4, 5, 2, 5, 6, 5, 1, 1
5 occurs more than any other number. 5 is the mode.
There can be only one mode. If no number appears the ‘most’ than there is no mode.
1, 4, 5, 2, 5, 6, 5, 1, 15 and 1 both occur the same number of times. There is no mode.
Understanding Information in Graphs
You need to know how to read and interpret graphs
Trends: Increasing Decreasing Staying constant (about the same)
Sample QuestionExplain the trends you see in this graph. Why do you think these trends are occurring?
Test Tools
Reminder: You need› A ruler› Pencil› Eraser› Coloured Pencils
To complete this test to expectation.