STATISTICS CONCEPTS AND METHODS FULLY
SOLVED TEST PAPER GRADED A+
◉ What is descriptive statistics?
Answer: Statistical procedures used to summarize, organize, and
simplify data.
◉ What is inferential statistics?
Answer: Techniques that allow us to study samples and make
generalizations about the populations from which they were
selected.
◉ What is sampling error?
Answer: The naturally occurring discrepancy between a sample
statistic and the corresponding population parameter.
◉ What is the purpose of the correlational method?
Answer: To observe two different variables to determine whether
there is a relationship between them.
◉ What does a correlational study demonstrate?
Answer: The existence of a relationship between two variables, but
not a cause-and-effect relationship.
, ◉ What is the goal of an experimental study?
Answer: To demonstrate a cause-and-effect relationship.
◉ What are the two distinguishing characteristics of experiments?
Answer: Manipulation of the independent variable and control over
the research environment, including a control group.
◉ What is the difference between experimental and
nonexperimental methods?
Answer: Experimental methods allow for cause-and-effect
explanations, while nonexperimental methods do not.
◉ What is a raw score?
Answer: A single measurement or observation in a data set.
◉ What is a data set?
Answer: A collection of measurements or observations.
◉ What is the relationship between population parameters and
sample statistics?
Answer: Every population parameter has a corresponding sample
statistic.
SOLVED TEST PAPER GRADED A+
◉ What is descriptive statistics?
Answer: Statistical procedures used to summarize, organize, and
simplify data.
◉ What is inferential statistics?
Answer: Techniques that allow us to study samples and make
generalizations about the populations from which they were
selected.
◉ What is sampling error?
Answer: The naturally occurring discrepancy between a sample
statistic and the corresponding population parameter.
◉ What is the purpose of the correlational method?
Answer: To observe two different variables to determine whether
there is a relationship between them.
◉ What does a correlational study demonstrate?
Answer: The existence of a relationship between two variables, but
not a cause-and-effect relationship.
, ◉ What is the goal of an experimental study?
Answer: To demonstrate a cause-and-effect relationship.
◉ What are the two distinguishing characteristics of experiments?
Answer: Manipulation of the independent variable and control over
the research environment, including a control group.
◉ What is the difference between experimental and
nonexperimental methods?
Answer: Experimental methods allow for cause-and-effect
explanations, while nonexperimental methods do not.
◉ What is a raw score?
Answer: A single measurement or observation in a data set.
◉ What is a data set?
Answer: A collection of measurements or observations.
◉ What is the relationship between population parameters and
sample statistics?
Answer: Every population parameter has a corresponding sample
statistic.
