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Sections: • 1- Variables:
• 2- How to Sample?:
• 3- Observational vs.
Experimental :
• 4- Open question:
• 5- Distribution:
• 6- Central Tendency 1:
• 7- Central Tendency 2:
•
8- Variability 1:
•
9- Variability 2:
•
10- Measures of
• Position 1:
11- Measures of
• Position 2:
• 12- Forming Groups:
• 13- True or False:
• 14- Playing Cards:
15- Ball Picking :
, • 16- Rolling Dice:
• 17- Probability:
• 18- Teachers' Opinion:
• 19- Concordia Elections:
• 20- Smoking:
• 21- Gender Bender:
• 22 - Research Design:
• 23 - Proofs of
Independence:
(94.29%)
Total Grade:
Question 1:
As a felinologist, Carol's job is to study cats. In a recent
comprehensive study that she undertook, Carol surveyed over 1000 cat
owners and asked them to answer a variety of questions such as their
cat's breed (Siamese, Taby, etc...), the number of cats they own, and
the length of their cat's tail.
(1 Point)
Which variable in this study would be classified as being "qualitative
ordinal"?
a. None of these choices are correct
b. The length of the cat’s tail
c. The average weight of all cats surveyed
d. The number of cats they own
e. The breed of the cat
Question 2:
Please classify each of the following variables as either nominal, ordinal,
discrete, or continuous.
1. The level of calcium (Ca) in the blood of a healthy person
(1 Point)
in micrograms per millilitre.
2. The number of teenagers that smoke cigarettes in a given
Quebec high school.
3. The factors that contribute to hair loss.
4. The variable, “colour of hair”.
a. nominal, continuous, discrete, nominal
b. impossible to classify
c. continuous, discrete, ordinal, nominal
, d. continuous, discrete, nominal, nominal
e. discrete, continuous, discrete, continuous
In order to maintain quality control in a brewery, every 20th bottle of
Question 3:
beer coming off the production line is opened and tested. This type of
sampling is defined as sampling.
systematic
(1 Points)
Question 4:
To judge the appeal of a proposed television sitcom, a random sample of
10 people from each of the three different age categories was selected.
Those individuals were asked to rate a pilot of a show. This sampling
technique is called sampling.
stratified
(1 Points)
Question 5:
You want to test the water supply, of a large rural area in Ontario, for e.
water hardness levels. A map of the area was partitioned into 50
districts. Testing 3 randomly-chosen wells from each district is an
example of:
(1 Point) a. Stratified sampling
b. Systematic sampling
c. Clustered sampling
d. Proportional sampling
A radio talk show host asked listeners to respond either yes or no to the c.
Question 6:
following question: "Is the candidate who spends the most on a
campaign the most likely to win?" Is this an experimental or an
observational study?
(1 Point)
a. Observational
b. Experimental
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