Data Management Quiz (November 26, 2009) Outline:
Know key Terms: Sample, Biased Results (84) Sample (84) census (84)
Frequency (82) Primary Data (82) secondary data (82)
mean (102) Median (102) Mode (102)
Students are expected to make:
a) Stem and Leaf Plot
b) 2-sided Stem and Leaf Plot
c) Frequency table
d) Tally table
e) Bar Graph or Histogram
label, Intervals. title needed for all graphs
See Web site for example and help (Data management Links)
Plot to following numbers:
121 130 142 152 122 122 130 132
143 143 145 152 152 156 123 132
Stem Leaf
-----------------------
12 1 2 2 3
13 0 0 2 2
14 2 3 3 5
15 2 2 2 6
a) Mode (152)
b) Mean (137.3)
c) Median (137)
d) Range (35)
See This site for Bar Graph construction
http://math.rice.edu/~lanius/Lessons/graph.html
See This Site for Histogram Information:
http://www.isixsigma.com/library/content/c010527c.asp
Biased Data:
Which of the following would be the better sample to determine the popularity
of hockey as a sport in Mississauga: - asking 15 people in the local
Tim Horton's store or asking 15 people at a hockey game?
Give reasons for your answer.
Parents/Students should visit the Data Management Links Site for further help
in studying for this quiz.
Again, thank you to the many parents who told me that they do appreciate this
web site. It is intended for your student's education and parent information.
I regret that during the past week I was not able to update the site as usual,
as I was busy with report cards and tutoring math.
Thank you
