Exam #1 Statistics 1200: Ries @ Mizzou
CH1 What is "statistics"?
Statistics is the science of making decisions.
CH1 Probability
A measure of how likely an event is to occur
CH1 Probability = 1 means
the event definitely will happen.
CH1 Probability = 0 means
the event definitely will NOT happen.
CH1 What is a Population
All individuals who are of interest to a researcher.
CH1 What is a Sample
The individuals who were actually contacted.
CH1 Representative sample:
A sample that is similar to the population, but smaller in size.
CH2 Seven Critical Components
1. Source
2. Researchers
3. Individuals or objects studied
4. Measurements
5. Setting
6. Extraneous differences
7. Magnitude
CH2 The subjects in a study were obtained via a cluster sample
3. Individuals or objects studied
CH2 A study regarding the economic benefit of constructing a new highway
interchange was paid for by a private business that would benefit from the
construction of the interchange.
, 1. Source
CH2 A study compared a measure of overall health between those who
regularly drink green tea and those who do not.
• Suppose that green tea drinkers are more likely to exercise regularly than
nondrinkers. Which component is of concern?
6. Extraneous Differences
CH2 A study regarding the amount of stress that college students are under was
conducted during the week prior to the start of classes.
5. Setting
CH2 The results of a study were originally published in The Journal of Applied
Economics.
1. Source
WB1-1 The field of Statistics
Branch of science that is concerned with making decisions (usually involving
uncertainty)
WB1-1 Survey
A set of questions that are posed to the subjects in the sample
WB1-1 Research Question
A question, formulated prior to collecting data, that a research hopes to answer
through his or her work
WB1-1 Subjects
The individuals or objects upon which the data is collected or measurements are
made. The
WB1-1 Response Variable (RESP)
The primary measurements of interest to the researcher
WB1-1 Explanatory Variable (EXPL) or factors
Additional measurements that are taken on the subjects besides the RESP
CH1 What is "statistics"?
Statistics is the science of making decisions.
CH1 Probability
A measure of how likely an event is to occur
CH1 Probability = 1 means
the event definitely will happen.
CH1 Probability = 0 means
the event definitely will NOT happen.
CH1 What is a Population
All individuals who are of interest to a researcher.
CH1 What is a Sample
The individuals who were actually contacted.
CH1 Representative sample:
A sample that is similar to the population, but smaller in size.
CH2 Seven Critical Components
1. Source
2. Researchers
3. Individuals or objects studied
4. Measurements
5. Setting
6. Extraneous differences
7. Magnitude
CH2 The subjects in a study were obtained via a cluster sample
3. Individuals or objects studied
CH2 A study regarding the economic benefit of constructing a new highway
interchange was paid for by a private business that would benefit from the
construction of the interchange.
, 1. Source
CH2 A study compared a measure of overall health between those who
regularly drink green tea and those who do not.
• Suppose that green tea drinkers are more likely to exercise regularly than
nondrinkers. Which component is of concern?
6. Extraneous Differences
CH2 A study regarding the amount of stress that college students are under was
conducted during the week prior to the start of classes.
5. Setting
CH2 The results of a study were originally published in The Journal of Applied
Economics.
1. Source
WB1-1 The field of Statistics
Branch of science that is concerned with making decisions (usually involving
uncertainty)
WB1-1 Survey
A set of questions that are posed to the subjects in the sample
WB1-1 Research Question
A question, formulated prior to collecting data, that a research hopes to answer
through his or her work
WB1-1 Subjects
The individuals or objects upon which the data is collected or measurements are
made. The
WB1-1 Response Variable (RESP)
The primary measurements of interest to the researcher
WB1-1 Explanatory Variable (EXPL) or factors
Additional measurements that are taken on the subjects besides the RESP
