Exam (elaborations)
STA 126- Introductory Statistics Chapter 1 Exam Questions and Complete Solutions Graded A+
- Course
- Institution
STA 126- Introductory Statistics Chapter 1 Exam Questions and Complete Solutions Graded A+
[Show more]
Content preview
STA 126- IntroductoryStatistics Chapter 1
Exam Questions and
Complete Solutions
Graded A+
Statistics - Answer: the science of collecting, organizing, summarizing, and analyzing data to draw
conclusions or answer questions.
Population - Answer: the entire group 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
Statistic - Answer: a numerical summary of a sample
Descriptive statistics - Answer: consist of organizing and summarizing data; describe data through
numerical summaries, tables, and graphs
Inferential statistics - Answer: uses methods to take a result from a sample, extend it to the population,
and measure the reliability of the result.
Parameter - Answer: a numerical summary of a population.
, Variables - Answer: used to describe various characteristics of individuals within a population
Qualitative variable - Answer: allows for classification of individuals based on some attribute or
characteristics.
Quantitative variable - Answer: provides numerical measures of individuals. The values of this type of
variable can be added or subtracted and provide meaningful results.
Discrete variable - Answer: a quantitative variable that either has a finite number of possible values or a
countable number of possible values. This type of variable cannot take on every possible value between
any two possible values; counting
Continuous variable - Answer: a quantitative variable that has an infinite number of possible values that
are not countable. It may take on every possible value between any two values; measuring
Data - Answer: observed values for a variable.
Level of Measurement - Answer: the mathematical precision with which the values of a variable can be
expressed
Nominal Level of Measurement - Answer: when the values of the variable name, label, or categorize and
does not allow for the values of the variable to be arranged in a rank or order.
EX: eye color
Ordinal Level of Measurement - Answer: when the values have the properties of the nominal level of
measurement but allows for ranking or ordering.
Interval Level of Measurement - Answer: Applies to data that can be arranged in order. In addition,
differences between data values are meaningful.; you can literally find the difference in the numbers
EX: temperature
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 YourExamplug. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78075 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now