29 Questions
What is the main purpose of determining the class limits for a frequency distribution?
To ensure each data item belongs to one and only one class
How many classes were used in the frequency distribution of the audit time data?
5
What is the lower class limit for the first class in the frequency distribution of the audit time data?
10 days
What is the class width for each of the classes in the frequency distribution of the audit time data?
5 days
Which of the following statements about the frequency distribution of the audit time data is NOT true?
The smallest data value of 12 days is included in the 10-14 class
What is the primary factor the analyst uses to determine the combination of number of classes and class width that provides the best frequency distribution?
Judgment
How many steps are necessary to define the classes for a frequency distribution with quantitative data?
Three steps
Why is it important to make the classes in a frequency distribution with quantitative data the same width?
To ensure the data is interpreted correctly
What is the purpose of a frequency distribution?
To summarize data showing number of observations in categories
How many classes are recommended to be used when forming classes for a frequency distribution?
Between 5 and 20 classes
What are class limits in a frequency distribution with quantitative data?
The upper and lower boundaries of each class
Why must we be more careful in defining nonoverlapping classes for quantitative data in a frequency distribution?
To ensure accurate representation of the data
What is the class width for the data provided in the text?
5
How many data values belong to the 15-19 class in the frequency distribution?
8
What is the midpoint for the class with lower limit 20 and upper limit 24?
22
Which class has the fewest data values according to the frequency distribution provided?
30-34
What does the value of a frequency distribution provide insights about?
Original data organization
If a class has a lower limit of 10, what would be its upper limit if the class width is 6?
14
What is the primary goal when constructing a frequency distribution for quantitative data?
To use enough classes to show variation, but not too many that some classes are sparse
If a dataset has a relatively small number of data points, how many classes would be appropriate for the frequency distribution?
5-6 classes
When determining the width of classes, what guideline is provided?
The width should be the same for each class
What expression is given to determine the approximate class width?
(Largest value - Smallest value) / Number of classes
Are the choices of number of classes and class width independent decisions?
No, they are directly related
What information is needed to determine the approximate class width using the given expression?
The largest and smallest data values, and the desired number of classes
What is the purpose of creating a frequency distribution for a data set?
To reveal the natural grouping and variation in the data
Which of the following is NOT a reason why the class width in a frequency distribution may be rounded to a more convenient value?
To ensure an equal number of classes
Which of the following statements about frequency distributions is true?
Different people may construct different, but equally acceptable, frequency distributions
What is the approximate class width used in the frequency distribution for the audit time data?
5 days
What is the total number of observations in the frequency distribution for the audit time data?
20
Test your understanding of summarizing quantitative data with this quiz. Questions cover topics like frequency distribution, class width, and interpreting data tables.
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