ELEMENTARY STATISTICS- FINAL EXAM UPDATE
QUESTIONS AND CORRECT ANSWERS ALREADY A
GRADED
What does the notation P(z<a) denote - (ANSWER)The notation P(z<a) denotes
the probability that the z-score is less than a
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
QUESTIONS AND CORRECT ANSWERS ALREADY A
GRADED
What does the notation P(z<a) denote - (ANSWER)The notation P(z<a) denotes
the probability that the z-score is less than a
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
