Math 115 Final Exam Questions with
Accurate Answers
Results in one and only one of many observations - ANSWERSA statistical experiment
is a process that, when preformed:
Inferential Statistics - ANSWERSThe methods to make decisions about one or more
populations based on sample results.
Representative Sample - ANSWERSContains the characteristics of the population as
closely as possible
equal to zero - ANSWERSFor a normal distribution, the z value for the mean is always
Chebyshevs Theorem - ANSWERSGives a lower bound for the area (percentage)
under a curve between 2 points on opposite sides of the mean and equidistant from the
mean
Empirical Rule - ANSWERSFor a bell shaped (normal) distribution, approximately 68%
of the observations lie within one standard deviation of mean. 95% for two, and 99.7%
for three.
Simple Event - ANSWERSan event that includes one and only one of the (final)
outcomes for an experiment.
Compound Event - ANSWERSCollection of more than one outcome for an experiment.
Discrete Random Variable - ANSWERSA random variable that assumes countable
values.
Descriptive Statistics - ANSWERSconsists of methods for organizing, displaying, and
describing data by using tables, graphs, and summary measures.
Population - ANSWERSconsists of all elements- individuals, items, or objects- whose
characteristics are being studied.
Sample - ANSWERSA portion of the population selected for study is referred to as.
Sample Survey - ANSWERSThe technique of collecting information from a portion of
the population
Census - ANSWERSA survey that includes every member of the population
Accurate Answers
Results in one and only one of many observations - ANSWERSA statistical experiment
is a process that, when preformed:
Inferential Statistics - ANSWERSThe methods to make decisions about one or more
populations based on sample results.
Representative Sample - ANSWERSContains the characteristics of the population as
closely as possible
equal to zero - ANSWERSFor a normal distribution, the z value for the mean is always
Chebyshevs Theorem - ANSWERSGives a lower bound for the area (percentage)
under a curve between 2 points on opposite sides of the mean and equidistant from the
mean
Empirical Rule - ANSWERSFor a bell shaped (normal) distribution, approximately 68%
of the observations lie within one standard deviation of mean. 95% for two, and 99.7%
for three.
Simple Event - ANSWERSan event that includes one and only one of the (final)
outcomes for an experiment.
Compound Event - ANSWERSCollection of more than one outcome for an experiment.
Discrete Random Variable - ANSWERSA random variable that assumes countable
values.
Descriptive Statistics - ANSWERSconsists of methods for organizing, displaying, and
describing data by using tables, graphs, and summary measures.
Population - ANSWERSconsists of all elements- individuals, items, or objects- whose
characteristics are being studied.
Sample - ANSWERSA portion of the population selected for study is referred to as.
Sample Survey - ANSWERSThe technique of collecting information from a portion of
the population
Census - ANSWERSA survey that includes every member of the population
