Introduction to Statistics Final Exam Questions and Correct Answers & Latest Updated
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Course
Introduction to Statistics
Institution
Introduction To Statistics
One year a survey asked a group of people from a certain country the following question,
"How many foreign languages do you know?" Of the 857 people who responded, 66%
reported knowing only 1 foreign language. Identify the sample.
o :## The sample is the 857 people who responded
A poll of abo...
Introduction to Statistics Final Exam Questions
and Correct Answers & Latest Updated
One year a survey asked a group of people from a certain country the following question,
"How many foreign languages do you know?" Of the 857 people who responded, 66%
reported knowing only 1 foreign language. Identify the sample.
o :## The sample is the 857 people who responded
A poll of about 1200 people between the ages of 50 and 64 asked "How concerned are you
about the problem of natural disasters?" The possible responses were very concerned,
somewhat concerned, not very concerned, and haven't heard about it. The poll reported
percentages (44, 30, 22, 4) in these categories.
Are the percentages statistics or parameters?
o :## The percentages quoted are statistics because they are a numerical summary of a sample
taken from a population
Categorical or Quantitative?
Beverage preference
o :## Categorical
Categorical or Quantitative?
Size of home
Master01: DO NOT COPY AND PASTE!! August 25, 2024 Latest Update
, 2|Page: 2024/2025 Grade A+
o :## Qualitative
Continuous or discrete?
Height of a tree
o :## continuous
Continuous or discrete?
Number of socks in a drawer
o :## discrete
According to a study, the median household income for a group was $50,043 while the
mean was $73,409. Does this suggest that the distribution of household income for the
group is symmetric, skewed tot he right, or skewed to the left?
o :## the fact that the mean is larger than the median for the group indicates that there are
extremely large incomes that are affecting the mean, suggesting the shape is skewed to the
right.
For the following pair of variables, which more naturally is the response variable and which
is the explanatory variable?
Grade received and Effort
o :## Grade received is the response variable because it is the outcome variable on which
comparisons are made and Effort is the explanatory variable.
Master01: DO NOT COPY AND PASTE!! August 25, 2024 Latest Update
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