STA 301 Module 1 -
Introduction to Statistics
Exam Questions and
Complete Solutions
Graded A+
Meanings for Word Statistics - Answer: - Course (STA 301)
-Field of Study
-Specific Value (GPA)
Statistics - Answer: The science of collecting, organizing, analyzing, and interpreting data in the presence
of variability for the purpose of making decisions.
Variability is... - Answer: everywhere!
Variability can be... - Answer: explained.
Factors - Answer: Variables we can manipulate to explain variability
Response Variable - Answer: The variable we measure/underlying variable of interest
Why study statistics? - Answer: 1. Being informed
2. Making good decisions
3.Evaluating decisions
, Descriptive Statistics - Answer: Methods for organizing and summarizing information and displaying data
(can be used with sample OR population data).
Inferential Statistics - Answer: Methods for drawing and measuring the reliability of conclusions about a
population
-Based on information obtained from a sample (cannot work with population data)
-Probability is the basic tool used
Statistics is not... - Answer: a math course.
Context - Answer: Provides the meaning to statistics
Population - Answer: The total set of "all" individuals of interest
Sample - Answer: A subset of "individuals" selected from the population
Parameter - Answer: Numerical characteristic of a population (a fixed quantity)
Statistic - Answer: Numerical characteristic of a sample (a variable quantity)
Statistics ---> Parameters - Answer: Statistics are used to estimate parameters and samples to learn
about populations
Census - Answer: Obtain information from an entire population of interest
Sampling - Answer: Choose a representative sample from the population of interest
-Tends to be representative when each subject in population has equal chance of being selected
Experimentation - Answer: Researchers impose treatments and controls
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.