PROBABILITY & STATISTIC - EAT

The entities on which data are collected are
Populations
Elements
Samples
None of these alternatives is correct.
The set of measurements collected for a particular element is (are) called
Variables
Samples
Observations
None of these alternatives is correct.
All the data collected in a particular study are referred to as the
Inference
Variable
Data set
None of these alternatives is correct.
Another name for "observations" is
Views
Variables
Cases
None of these alternatives is correct.
In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of the
Nominal scale
Ratio scale
Ordinal scale
Interval scale
Some hotels ask their guests to rate the hotel’s services as excellent, very good, good, and poor. This is an example of the
Ordinal scale
Ratio scale
Nominal scale
Interval scale
The ratio scale of measurement has the properties of
Only the ordinal scale
Only the nominal scale
The rank scale
The interval scale
Arithmetic operations are inappropriate for
The ratio scale
The nominal scale
The interval scale
Both the ratio and interval scales
Income is an example of a variable that uses the
Ratio scale
Nominal scale
Interval scale
Ordinal scale
Quantitative data refers to data obtained with a(n)
Ordinal scale
Nominal scale
Either interval or ratio scale
Only interval scale
Quantitative data
Are always non numeric
May be either numeric or non numeric
Are always numeric
None of these alternatives is correct
In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of a
Qualitative variable
Quantitative variable
Qualitative or quantitative variable, depending on how the respondents answered the question
None of these alternatives is correct.
Qualitative data
Indicate either how much or how many
Cannot be numeric
Are labels used to identify attributes of elements
Must be non numeric
Ordinary arithmetic operations are meaningful
Only with qualitative data
Only with quantitative data
Either with quantitative or qualitative data
None of these alternatives is correct.
Income is an example of
Qualitative data
Either qualitative or quantitative data
Dollar data
Quantitative data
The summaries of data, which may be tabular, graphical, or numerical, are referred to as
Inferential statistics
Descriptive statistics
Statistical inference
Report generation
Qualitative data can be graphically represented by using a(n)
Histogram
Frequency polygon
Ogive
Bar graph
Fifteen percent of the students in a school of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting. The graphical device(s) which can be used to present these data is (are)
A line graph
Only a bar graph
Only a pie chart
Both a bar graph and a pie chart
In constructing a frequency distribution, as the number of classes are decreased, the class width
Decreases
Remains unchanged
Can increase or decrease depending on the data values
Increases
A graphical presentation of the relationship between two variables is
An ogive
A histogram
Either an ogive or a histogram, depending on the type of data
A scatter diagram
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