Presentation of Data — Practice Quiz
Gujarat Board · Class 11 · Statistics
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Which of the following is an example of a discrete variable?
What is the main purpose of data classification?
In a frequency distribution, what does 'frequency' represent?
What is the range of a dataset?
Sample Questions
Which of the following are advantages of data classification? (Select all correct answers)
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Makes data presentation attractive and simple, Facilitates easy comparison of characteristics, Saves time, money and labor
Data classification simplifies presentation, enables easy comparison between different characteristics, and reduces the time and effort needed for analysis. It does not increase complexity or make data collection more difficult.
In exclusive classes, an observation with value equal to the upper limit is:
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Included in the next class
In exclusive classes, the upper limit is not included in that class but belongs to the succeeding class. For example, in class 30-35, value 35 goes to the next class 35-40.
Which type of classification is used when data has more than one attribute?
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Manifold classification
Manifold classification is used when data needs to be classified based on multiple attributes simultaneously, such as classifying employees by both gender and department.
What is cumulative frequency?
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Sum of frequencies up to a particular value or class
Cumulative frequency is the running total of frequencies from the beginning up to a particular value or class. It shows how many observations fall below a certain point.
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