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Questions and Answers
What is descriptive statistics?
Descriptive statistics deals with the procedures that organize, summarize, and describe quantitative data.
What does inferential statistics involve?
Inferential statistics involves making judgments or conclusions about a population based on findings from a sample taken from that population.
What is a population in statistical terms?
A population refers to the totality of objects, persons, places, or things used in a particular study.
What is a sample in statistics?
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What is the definition of ungrouped data?
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Which of the following best describes a statistic?
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_________ is any characteristic, number, or quantity that can be measured or counted.
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Primary data is collected by someone else for their own use.
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What is an investigator in the context of data collection?
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Study Notes
Statistics
- The science of collecting, organizing, presenting, analyzing and interpreting data
- Used to draw judgments and help with decision-making
Descriptive Statistics
- Organizes, summarizes, and describes quantitative data
- Seeks to simply describe data
Inferential Statistics
- Makes judgments or conclusions about a population based on sample data
Statistical Terms
- Population or Universe: The entire group of objects, persons, places, or things being studied. All members of a particular group.
- Sample: A subset of the population.
- Data: Facts, figures, and information collected about a population or sample.
- Ungrouped (or raw) data: Data that is not organized in a specific way. It's simply the collected data.
- Grouped Data: Raw data is organized into groups or categories with corresponding frequencies. This is called a frequency distribution.
- Parameter: A descriptive measure of a characteristic of a population.
- Statistic: A measure of a characteristic of a sample.
- Constant: A characteristic or property common to all members of a population or sample.
- Variable: Any characteristic, number, or quantity that can be measured or counted. Also called a data item. Examples are age, sex, income, expenses, country of birth, capital expenditure, class grades, eye color, and vehicle type.
Data Collection Methods
- Primary Data: Data collected during the process of investigation. This is data collected directly from the source.
- Secondary Data: Data that was collected by another organization but is used by the investigator.
Data Examples:
- Primary Data*:
- Raw data
- Biographies
- Diaries
- Photographs
- Surveys
- Secondary Data*:
- Dictionaries
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Description
Test your knowledge of the fundamentals of statistics, covering key concepts like descriptive and inferential statistics. This quiz will assess your understanding of statistical terms and the processes involved in analyzing data. Ideal for students at any level looking to reinforce their statistical knowledge.
