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February 12, 2009
It is E370 Time!!!
Announcements
Today’s Goals: You should be able to
create a stem and leaf plot.
compare the stem and leaf plot to a dot plot and a histogram.
use a histogram to demonstrate what the “center” of a data set is.
compare characteristics of three measures of center.
use relative frequencies.
Next Time
Announcements
The first homework assignment is posted and is due Wednesday at 8:00
PM.
Please do not wait until the last minute to try to access the
assignment.
We will be unable to help you at the last minute.
Response to some of your WarmUps Comments:
You are not responsible for
•
geometric mean
•
kurtosis
We will be talking about standard deviation in the next class period.
Look at the stem and leaf plot for mother’s age from the last class.
Look at a dot plot of this data.
x
xx
x
x xxx
x
x
xxxxx
x
x
x
xxxxxxxx
x
x
131415161718192021222324252627282930313233343536373839
How do they compare?
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Mutually Exclusive and Collectively Exhaustive Categories
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 Winter '09
 STAFF
 Economics, Standard Deviation, Mean, dot plot, collectively exhaustive categories, is. compare characteristics

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