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Data Analysis Project
What makes a graph reliable and accurate
• Collect information from all point of
views (e.g. salaries from different jobs)
• Give detailed information
• Simple but easy for the reader to
understand
A Misleading Graph
In this graph, there are a
few errors:
• For the numbers at the
y- axis, the graph did not
mention what it is meant
for
• At “0” , the line of the xaxis pass through y-axis
•The graph has no topic
A bad presentation #2
In this graph, the errors
are as the followings:
• Again they didn’t
explain clearly what is
the y-axis is stands for
• We are now not sure
how long will the bar
continue extend
• The “categories” in the
x-axis should be in the
same line
• The graph has no topic
at all
Accurate and Reliable Graph
Agriculture
•The graph clearly
listed what the
colors represent
•The graph
showed how much
water each of
these
organizations use
•The graph can be
easily understand
Water usage
Mining
Manufacturing
64%
Paper and allied
products
Primary metal
1%
2%
10%
3%
2%
0%
5%
13%
0%
Chemial and chemical
products
Other manufacturing
industries
Electric power and
other ulities
Other industries
Personal and
government sectors
Accurate n’ Reliable No.2
• Easy to
understand what
the graph wants
to tell us by
having different
colors
• The graph clearly
show us what the
x and y-axis
stands for
How to analyze the data
How should we analyze the data? How do we
know if it is right or wrong. To analyze the data, we
first have to get the most updated data we can get.
The data should be most detailed. Each information
from data shows a value of the item we want to
know. Sometimes data can be wrong, it can be fake.
Usually, we can determine if the data is right or
wrong by our logic human mind. But when we
cannot do so, we have to check the information
about the data, gather more resources to
understand and find out if the data is right on
wrong.
How we should collect and
present information
The way how you present your information is very
important. A successful presentation will let the
reader/viewer understand the situation of what you want
to show them. Sometimes graphs can be misleading,
causing misunderstanding. This can be due to the
information you collect. Information should be collected
from all points of views and should be updated. The
newer the information is, the more reliable it is. When we
are presenting the information on a graph, the graph
should be neat and tidy. A simple and clear graph is the
best way of presenting information.
Programs we used
Systems we used:
Windows Xp Professional
Bibliography
1)Canadian Statistics, Modification Date: December 4,
2003.http://www.statcan.ca/english/Pgdb/envir05.htm
2) Index of health /woman /index, Modification Date: 5th
September,2003.Access date:1st December,2003.
http://www.nhlbi.nih.gov/health/women/images/chart
4)Misleading graph discussions, Modification Date:
Unknown. Access date:1stDecember,2003.
http://www.shodor.org/interactivate/elementary/discussio
ns/ElemGraphsdiscussion.htm