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Introduction to Statistics Final Exam Questions and Correct Answers & Latest Updated $9.99   Add to cart

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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...

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  • August 25, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Introduction to Statistics
  • Introduction to Statistics
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1|Page: 2024/2025 Grade A+




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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