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STA20 2023 Stats Test I.
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STA20 2023 Stats Test I.
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12/13/2017 BISSAYA ABDELLA's Quiz History: Test 1 ( Chapters 1, 2, 3): extended to 09/20Test 1 ( Chapters 1, 2, 3): extended to 09/20 Results for
BISSAYA ABDELLA
Correct answers are hidden.
Score for this attempt: 100 out of 100
Submitted Sep 17 at 2:16pm
This attempt took 79 minutes.
3..43 pts
Question 1
Determine whether the given value is a statistic or a parameter.
A survey found that 96% of all respondents were optimistic.
The value is a statistic because it is a numerical measurement describing
some characteristic of a population.
The value is a parameter because it is a numerical measurement describing
some characteristic of a population.
The value is a parameter because it is a numerical measurement describing
some characteristic of a sample.
The value is a statistic because it is a numerical measurement describing
some characteristic of a sample.
3..33 pts
Question 2
Determine whether the given value is from a discrete or a continuous
data set.
In a test of a method of gender selection, 720 couples used the XSORT
method and 509 of them had baby girls.
https://phsc.instructure.com/courses/1285123/quizzes/1777115/history?version=2 1/21
,12/13/2017 BISSAYA ABDELLA's Quiz History: Test 1 ( Chapters 1, 2, 3): extended to 09/20
A discrete data set because there are a finite number of possible values..
The value is from a continuous data set because there are infinitely many
possible values and those values cannot be counted.
The data set is neither continuous nor discrete.
The value is from a continuous data set because the number of possible
values is infinite and countable.
3..33 pts
Question 3
Determine whether the given value is from a discrete or a continuous
data set.
When a car is randomly selected, it is found to have enough room to seat 5
people.
The data set is neither continuous nor discrete.
The value is from a continuous data set because there are infinitely many
possible values and those values cannot be counted.
The value is from a discrete data set because there are a finite number of
possible values..
The value is from a continuous data set because the number of possible
values is infinite and countable.
3..33 pts
Question 4
https://phsc.instructure.com/courses/1285123/quizzes/1777115/history?version=2 2/21
, 12/13/2017 BISSAYA ABDELLA's Quiz History: Test 1 ( Chapters 1, 2, 3): extended to 09/20
Determine which of the four levels of measurement ( nominal, ordinal,
interval, ratio) is most appropriate for the data below.
Volumes of brain in cubic centimeters.
The ordinal level of measurement is most appropriate because the data can
be ordered, but differrences cannot be found or are meaningless.
The ratio level of measurement is most appropriate because the data can be
ordered, differrences ( obtain by subtraction) can be found and are
meaningful, and there is a natural starting point.
The interval level of measurement is most appropriate because the data can
be ordered, differrences ( obtain by subtraction) can be found and are
meaningful, and there is no natural starting point.
The nominal level of measurement is most appropriate because the data
cannot be ordered.
3..33 pts
Question 5
Determine which of the four levels of measurement ( nominal, ordinal,
interval, ratio) is most appropriate for the data below.
Ranks of cars evaluated by a consumer's magazine.
The nominal level of measurement is most appropriate because the data
cannot be ordered.
https://phsc.instructure.com/courses/1285123/quizzes/1777115/history?version=2 3/21
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