MAT 150 UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
COMPREHENSIVE STUDY GUIDE
●● bar chart
Answer: a chart with bars whose lengths are proportional to quantities
●● Bell-shaped curve
Answer: hat represents the distribution of values, frequencies, or
probabilities of a set of data. It slopes downward from a point in the
middle corresponding to the mean value, or the maximum probability.
●● Bias - sampling
Answer: A common cause of sampling bias lies in the design of the
study or in the data collection procedure, both of which may favor or
disfavor collecting data from certain classes or individuals or in certain
conditions.
Three Examples: information bias, selection bias, and confounding
●● Blocking
, Answer: the arranging of experimental units in groups (blocks) that are
similar to one another. Typically, a blocking factor is a source of
variability that is not of primary interest to the experimenter.
●● categorical data
Answer: Data that consists of names, labels, or other nonnumerical
values
Bar graph is the most widely used types of graphical displays for
categorical data
●● Census
Answer: Obtaining information from an entire population
●● Central Limit Theorem
Answer: The theory that, as sample size increases, the distribution of
sample means of size n, randomly selected, approaches a normal
distribution.
●● confidence interval
Answer: the range of values within which a population parameter is
estimated to lie
●● confidence level
AND CORRECT ANSWERS
COMPREHENSIVE STUDY GUIDE
●● bar chart
Answer: a chart with bars whose lengths are proportional to quantities
●● Bell-shaped curve
Answer: hat represents the distribution of values, frequencies, or
probabilities of a set of data. It slopes downward from a point in the
middle corresponding to the mean value, or the maximum probability.
●● Bias - sampling
Answer: A common cause of sampling bias lies in the design of the
study or in the data collection procedure, both of which may favor or
disfavor collecting data from certain classes or individuals or in certain
conditions.
Three Examples: information bias, selection bias, and confounding
●● Blocking
, Answer: the arranging of experimental units in groups (blocks) that are
similar to one another. Typically, a blocking factor is a source of
variability that is not of primary interest to the experimenter.
●● categorical data
Answer: Data that consists of names, labels, or other nonnumerical
values
Bar graph is the most widely used types of graphical displays for
categorical data
●● Census
Answer: Obtaining information from an entire population
●● Central Limit Theorem
Answer: The theory that, as sample size increases, the distribution of
sample means of size n, randomly selected, approaches a normal
distribution.
●● confidence interval
Answer: the range of values within which a population parameter is
estimated to lie
●● confidence level
