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12.3 and 5.8

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Matthew Agee

on 6 May 2010

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Transcript of 12.3 and 5.8

Math Lesson By Matt Agee Jake Kelly Will Grant Mean: The mean is the average of
a certain amount of numbers. First,
must add up all the numbers, then
divide by the amount of numbers you
added. Ex: Find the mean of 7, 11, and 9 Answer: 9 Median: the median is the number
in the middle of a group of numbers.
To find the median, you must put the
numbers in order from least to greatest,
then find the number in the middle.
In the event two numbers are in the middle,
add them up and then divide by two. Example: find the median of 6, 10, and 12. Answer: 10 Mode: The mode is the most occuring
number in a set. To find it, you must
analyze the numbers in a set to see
what occurs the most. Example: Find the mode of 2, 4, 5, 7, 7, and 14 Answer: 7 Anal

:) Range: the range is what occurs when
you subtract the lowest number from
the highest number in set of numbers. Example: Find the range of 5, 7, and 13. Answer: 8 12.3: Using Data Displays One type of graph is a circle graph.
these graphs look like slices of a pie.

Example: http://hotmath.com/images/gt/lessons/genericalg1/circle_graph.gif Another type of graph is the line graph.
These graphs are often used in businesses today. Example: Another type of graph is the bar graph.
These are usually used as comparisons. Example: http://www.neuroscience.com/bargraph.gif http://1.bp.blogspot.com/_Oy0Q4FbMvik/Ssv1oa_qQrI/AAAAAAAAAAs/4S2RclPBYSI/s320/line+graph..gif Misleading Graphs: Certain graphs
can have splits in numbers or other
concepts that could throw you off

Examples: http://eservices.nysed.gov/vls/uploads/Image/sampletask/VLS%20Image%207S7a.gif Sources Cited
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