ELEMENTARY STATISTICS EXAM SCRIPT
SOLVED QUESTIONS ACCURATE ANSWER
COLLECTION
●● point estimate
Answer: A point estimate is a single value used to approximate a
population parameter
●● Z-score
Answer: When a data value is converted to a standardized scale
representing the number of standard deviations the data value lies from
the mean, we call the new value a ____________________.
●● s
Answer: The symbol for sample standard deviation is
__________________.
●● Degrees of Freedom
Answer: Degrees of Freedom Number of data points that are free to vary
based on the person who is responding (ex: mood that day, etc.; gender
is the same every day)
●● Population
,Answer: Population The entire collection of individuals for about which
information is sought.
●● Sample
Answer: A subset of a population containing individuals who are
actually observed.
●● Simple Random Sample
Answer: Every sample of size n has the same chance of be being chosen
(selected).
●● Cluster Sampling
Answer: Items are drawn from the population in groups or clusters.
●● Systematic Sampling
Answer: The population items are ordered in a list then every Kth item is
sampled.
●● Voluntary Response Samples (self-selected sample)
Answer: When people choose to participate in the sample, usually only
people with strong opinions choose to participate.
●● lower class limit
, Answer: the least number that can belong to a class
●● upper class limit
Answer: the least number that can belong to a class
●● class width
Answer: ________________ is found by subtracting a lower class limit
from the next consecutive lower class limit.
●● range
Answer: the difference between the maximum data entry and the
minimum data value
●● census
Answer: ____________ is NOT a measure of center
●● data
Answer: collection of observations, measurements, gender or survey
responses single data.
●● measure of center
Answer: A value at the center or middle of a data set is a(n)
______________________.
SOLVED QUESTIONS ACCURATE ANSWER
COLLECTION
●● point estimate
Answer: A point estimate is a single value used to approximate a
population parameter
●● Z-score
Answer: When a data value is converted to a standardized scale
representing the number of standard deviations the data value lies from
the mean, we call the new value a ____________________.
●● s
Answer: The symbol for sample standard deviation is
__________________.
●● Degrees of Freedom
Answer: Degrees of Freedom Number of data points that are free to vary
based on the person who is responding (ex: mood that day, etc.; gender
is the same every day)
●● Population
,Answer: Population The entire collection of individuals for about which
information is sought.
●● Sample
Answer: A subset of a population containing individuals who are
actually observed.
●● Simple Random Sample
Answer: Every sample of size n has the same chance of be being chosen
(selected).
●● Cluster Sampling
Answer: Items are drawn from the population in groups or clusters.
●● Systematic Sampling
Answer: The population items are ordered in a list then every Kth item is
sampled.
●● Voluntary Response Samples (self-selected sample)
Answer: When people choose to participate in the sample, usually only
people with strong opinions choose to participate.
●● lower class limit
, Answer: the least number that can belong to a class
●● upper class limit
Answer: the least number that can belong to a class
●● class width
Answer: ________________ is found by subtracting a lower class limit
from the next consecutive lower class limit.
●● range
Answer: the difference between the maximum data entry and the
minimum data value
●● census
Answer: ____________ is NOT a measure of center
●● data
Answer: collection of observations, measurements, gender or survey
responses single data.
●● measure of center
Answer: A value at the center or middle of a data set is a(n)
______________________.
