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STA 301 Module 1 - Introduction to Statistics Exam Questions and Complete Solutions Graded A+
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STA 301 Module 1 - Introduction to Statistics Exam Questions and Complete Solutions Graded A+
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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
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