ULL QMET 251 Exam 1 Questions With Complete
Solutions
3 types of dispersion Correct Answers range, variance, and
standard deviation
4 levels of measurement Correct Answers -nominal
-interval
-ordinal
-ratio
A collection of all possible individuals, objects, or
measurements of interest Correct Answers Population
A decision, estimate, prediction, or generalization about a
population based on a sample Correct Answers Inferential
statistics
A graph in which the classes are marked on the horizontal axis
and the class frequencies on the vertical axis Correct Answers
Histogram
A grouping of qualitative data into mutually exclusive and
collectively exhaustive classes showing the number of
observations in each class Correct Answers Frequency table
A grouping of quantitative data into mutually exclusive and
collectively exhaustive classes showing the number of
observations in each class Correct Answers Frequency
distribution
, A portion of the population of interest Correct Answers
Sample
A set of knowledge and skills used to collect, organize, analyze,
and interpret data to assist in making more effective decisions
Correct Answers Statistics
Another name for a qualitative variable Correct Answers
Attribute variable
Another name for descriptive statistics Correct Answers
Descriptive analytics
Arithmetic mean of the squared deviations from the mean
Correct Answers Variance
Captures the relationship between a class total and the total
number of observations Correct Answers Relative frequency
Data arranged in some order with meaningful amounts of
difference between data values, no natural zero Correct
Answers Interval level of measurement
Data arranged in some order with no meaning between data
values Correct Answers Ordinal level of measurement
Data that is classified into categories and cannot be arranged in
any particular order Correct Answers Nominal level of
measurement
Solutions
3 types of dispersion Correct Answers range, variance, and
standard deviation
4 levels of measurement Correct Answers -nominal
-interval
-ordinal
-ratio
A collection of all possible individuals, objects, or
measurements of interest Correct Answers Population
A decision, estimate, prediction, or generalization about a
population based on a sample Correct Answers Inferential
statistics
A graph in which the classes are marked on the horizontal axis
and the class frequencies on the vertical axis Correct Answers
Histogram
A grouping of qualitative data into mutually exclusive and
collectively exhaustive classes showing the number of
observations in each class Correct Answers Frequency table
A grouping of quantitative data into mutually exclusive and
collectively exhaustive classes showing the number of
observations in each class Correct Answers Frequency
distribution
, A portion of the population of interest Correct Answers
Sample
A set of knowledge and skills used to collect, organize, analyze,
and interpret data to assist in making more effective decisions
Correct Answers Statistics
Another name for a qualitative variable Correct Answers
Attribute variable
Another name for descriptive statistics Correct Answers
Descriptive analytics
Arithmetic mean of the squared deviations from the mean
Correct Answers Variance
Captures the relationship between a class total and the total
number of observations Correct Answers Relative frequency
Data arranged in some order with meaningful amounts of
difference between data values, no natural zero Correct
Answers Interval level of measurement
Data arranged in some order with no meaning between data
values Correct Answers Ordinal level of measurement
Data that is classified into categories and cannot be arranged in
any particular order Correct Answers Nominal level of
measurement
