Exam (elaborations)
Elementary Statistics 1401 (final exam) questions and answers.
- Course
- Institution
Elementary Statistics 1401 (final exam) questions and answers.
[Show more]
Content preview
Elementary Statistics1401 (final exam)
questions and answers
Statistics - answer the science of collecting,
organizing, summarizing, and
analyzing information to draw conclusions or
answer questions. In addition, statistics is about
providing a measure of confidence in any
conclusions.
Data - answer a "fact or proposition used to draw a
conclusion or make a decision." Data describe
characteristics of an individual.
Population - answer The entire group of individuals
to be studied
Individual - answer a person or object that is a
member of the population being studied.
Sample - answer a subset of the population that is
being studied.
,descriptive statistics - answer consist of organizing
and summarizing data. Descriptive statistics
describe data through numerical summaries,
tables, and graphs.
statistic - answer a numerical summary based on a
sample.
inferential statistics - answer uses methods that
take results from a sample, extends them to the
population, and measures the reliability of the
result.
parameter - answer a numerical summary of a
population
(Statistic vs parameter) Suppose the percentage of
all students on your campus who have a job is
84.9%. - answer This value represents a parameter
because it is a numerical summary of a population.
(Statistic vs parameter) Suppose a sample of 250
students is obtained, and from this sample we find
that 86.4% have a job. - answer This value
represents a statistic because it is a numerical
summary based on a sample.
,The Process of Statistics - answer 1. Identify the
research objective
2. Collect the data needed to answer the
question(s) posed in (1).
3. Describe the data.
4. Perform inference
Variables - answer the characteristics of the
individuals within the population
quantitative variables (associated with discrete
and continuous data) - answer (take on # values)
provide numerical measures of individuals. The
values of a quantitative variable can be added or
subtracted and provide meaningful results.
****examples****
number of students in a class
population size of city
age of an individual
height of an individual
discrete variable - answer a quantitative variable
that has either a finite number of possible values
or a countable number of possible values
, continuous variable - answer a quantitative
variable that has an infinite number of possible
values that are not countable
qualitative data - answer (take on names or labels)
descriptive data; observations corresponding to a
qualitative variable
****examples****
eye color
gender
level of education
breed of dog
nominal - answer if the values of the variable
name, label, or categorize. In addition, the naming
scheme does not allow for the values of the
variable to be arranged in a ranked, or specific,
order.
ordinal - answer if it has the properties of the
nominal level of measurement and the naming
scheme allows for the values of the variable to be
arranged in a ranked, or specific, order.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BRAINBOOSTERS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
50990 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now