STATISTICS EXAM #2 REVIEW
TEST DATE: Monday October 15, 2007
TEST COVERS: Chapters 913
WHAT TO DO:
look over all quizzes, notes, and practice problems!!!!
SECTION I: Vocabulary
Chapter 9:
“The Chicago Cubs have won eleven games by April 20 this season. This would make about a 100 win
championship season, since the Cardinals won last year with only 83 wins.”
The sportscaster was not
very _________ with her predictions, since the eleven wins came with twenty games played. In the full
season of 162 games this winning ______ would be give _____ wins. The sample size is too ______ be
depended upon to predict Cub’s season total. Even if this total is ________, another team may win more
games than this. Exact statistics can be misused to draw ___________ conclusions, because the people in
Chicago want to hear from their sportscasters that they will have a champion this year in some sport.
The toothpaste advertisement said, “Three out of four dentists surveyed recommended Peppermint
Toothpaste.” This ______ statement did not tell that the three dentists with a favorable recommendation
were employed by the toothpaste company. A paper reported that SIUE has 500 deer on the campus
property. There are about 3 square miles of open SIUE land. This would mean about one deer for every
four acres. This deer population is too ______. It is more ________ that the paper meant to say only 50
deer, not 500, because the paper made an easy _______ in publishing the number of deer on SIUE. 56%
of the adults between 50 and 60 years old are women and ______ % are men. This is the conclusion for
the USA population (±2%) from a SRS of these adults for a sample size of 3028. In the sample ______
were women. The report said there were 132 men in the sample, but this is far too few. The percentage of
men indicates that there were ______ in the sample. Can you speculate about the reason for the error? The
wholesale price of a sofa is $327. The retail furniture company applies a 130% markup on this price and
sells the sofa for $ _______ to make some profit (not all of the markup is profit). After Christmas, candy
canes were offered for sale with a 95% discount on the retail price of $3.00 per box. The sale price of the
candy cane box is $ ______. A 500% weight gain is okay for the change of 20 lb. pigs into hogs. The new
weight of the hogs is _____ lb. But a 250% weight loss is not possible for 100 lb. obese children. The
new weight would be _____ lb., an impossible weight for physical objects.
Chapter 10:
We have a set of households in a typical suburban neighborhood. One variable is the kind of dwelling
occupied by the households. There are 64 households in 10 multifamily apartments, 35 singlefamily
homes, and 46 households in 23 duplexes. This variable is a _____________ variable. To visualize the
distribution of the variable of this sample, we will put them into _____ order from lowest to highest. We
can now make a graph of the groups' _________ or ___________. We will use either a _________ or a
_______ graph to compare the categories visually. A pictogram is not a good graph for this purpose,
because the _______ of each picture distorts the proportional distribution of the three categories of
households. If we make a pie chart of this relationship, we allot _______ degrees to the apartment
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 Fall '08
 Harmon
 Statistics, Normal Distribution, Standard Deviation, overall pattern

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