STATISTICS CONCEPTS AND METHODS
COMPREHENSIVE QUESTIONS AND CORRECT
ANSWERS
◉ What are the two main branches of statistics?
Answer: Descriptive statistics and inferential statistics.
◉ Define descriptive statistics.
Answer: Methods for organizing, summarizing, and presenting data
in an informative manner.
◉ Define inferential statistics.
Answer: Methods for making decisions or predictions about a
population based on sample data.
◉ What is the difference between a population and a sample?
Answer: A population is the entire set of units of interest, while a
sample is a representative subset of that population.
◉ What is a parameter in statistics?
Answer: A numerical value that summarizes a characteristic of an
entire population.
, ◉ What is a statistic in statistics?
Answer: A numerical value that summarizes data from a sample.
◉ What is a census?
Answer: A data collection from every member of the population.
◉ Classify the following variable: 'The color of a car'.
Answer: Qualitative variable (nominal).
◉ Classify the following variable: 'The height of students'.
Answer: Quantitative variable (continuous).
◉ What are the four types of variables in statistics?
Answer: Qualitative, quantitative, nominal, ordinal, discrete, and
continuous.
◉ What is data in the context of statistics?
Answer: Data refers to any collection of numbers, characters,
images, or other items that provide information about something.
COMPREHENSIVE QUESTIONS AND CORRECT
ANSWERS
◉ What are the two main branches of statistics?
Answer: Descriptive statistics and inferential statistics.
◉ Define descriptive statistics.
Answer: Methods for organizing, summarizing, and presenting data
in an informative manner.
◉ Define inferential statistics.
Answer: Methods for making decisions or predictions about a
population based on sample data.
◉ What is the difference between a population and a sample?
Answer: A population is the entire set of units of interest, while a
sample is a representative subset of that population.
◉ What is a parameter in statistics?
Answer: A numerical value that summarizes a characteristic of an
entire population.
, ◉ What is a statistic in statistics?
Answer: A numerical value that summarizes data from a sample.
◉ What is a census?
Answer: A data collection from every member of the population.
◉ Classify the following variable: 'The color of a car'.
Answer: Qualitative variable (nominal).
◉ Classify the following variable: 'The height of students'.
Answer: Quantitative variable (continuous).
◉ What are the four types of variables in statistics?
Answer: Qualitative, quantitative, nominal, ordinal, discrete, and
continuous.
◉ What is data in the context of statistics?
Answer: Data refers to any collection of numbers, characters,
images, or other items that provide information about something.
