What is the primary difference between primary data and secondary data?

Primary data is collected by the government, while secondary data is collected by individuals.

Primary data is collected for a specific purpose, while secondary data is collected for general use.

Primary data is always more accurate than secondary data.

Primary data is collected through questionnaires, while secondary data is collected through direct observation.

What is the main advantage of using diagrammatic data presentation?

It provides precise values for data analysis.

It is universally accepted in all fields of study.

It reveals hidden facts in data.

It is quick to grasp and easy to understand.

What is the function of tabulation in statistics?

To present data in a systematic and orderly manner

To classify data according to attributes

Which type of classification divides data based on numerical quantities like height and weight?

Classification according to attributes

Classification according to class-intervals

What is the primary purpose of indirect oral investigation in data collection?

To collect data through questionnaires

To cross-examine individuals with knowledge about the inquiry

To conduct personal observations

To obtain data from official publications

Why is it important to define the units of data before collecting information?

To make data universally accepted

To classify data according to attributes

What is the purpose of a tabular presentation of data?

To present data systematically for analysis

To classify data according to attributes

What are cumulative frequencies in a class-interval classification?

The frequencies divided by class intervals

The frequencies added up from the top of the intervals

The frequencies added up from the bottom of the intervals

The frequencies multiplied by class intervals

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