Podcast
Questions and Answers
Which variable is classified as discrete?
Which variable is classified as discrete?
- Height
- Age
- Number of patients in a hospital (correct)
- Weight
What is the correct level of measurement for SAT scores?
What is the correct level of measurement for SAT scores?
- Nominal
- Ordinal
- Ratio
- Interval (correct)
Which of the following is an example of a continuous variable?
Which of the following is an example of a continuous variable?
- Number of enrollees in a semester
- Number of boys in a class
- Pieces of shampoo sachets in a box
- Height (correct)
Which of the following levels of measurement has no absolute zero?
Which of the following levels of measurement has no absolute zero?
The country names categorized by their respective attributes represent which level of measurement?
The country names categorized by their respective attributes represent which level of measurement?
Which of these is a characteristic of ratio level measurements?
Which of these is a characteristic of ratio level measurements?
What type of variable is represented by the number of COVID-19 victims in a barangay?
What type of variable is represented by the number of COVID-19 victims in a barangay?
Which type of data arrangement reflects significant order without meaningful differences?
Which type of data arrangement reflects significant order without meaningful differences?
What is the primary focus of inferential statistics?
What is the primary focus of inferential statistics?
Which of the following best describes descriptive statistics?
Which of the following best describes descriptive statistics?
What origin does the term 'statistic' come from?
What origin does the term 'statistic' come from?
Which is NOT a use of statistics?
Which is NOT a use of statistics?
In which situation would descriptive statistics be most appropriate?
In which situation would descriptive statistics be most appropriate?
Which of the following statements best reflects the nature of statistics as a scientific discipline?
Which of the following statements best reflects the nature of statistics as a scientific discipline?
What is one major limitation of using only descriptive statistics?
What is one major limitation of using only descriptive statistics?
Which example best illustrates inferential statistics?
Which example best illustrates inferential statistics?
What type of study concludes that the average credit card debt of college graduates has increased from the year 2009-2010?
What type of study concludes that the average credit card debt of college graduates has increased from the year 2009-2010?
Which of the following statements is an example of descriptive statistics?
Which of the following statements is an example of descriptive statistics?
What is the primary difference between a population and a sample?
What is the primary difference between a population and a sample?
If Mr. Lopez found out that the population consists of 2,852 full-time college faculty members, what term describes the 450 teachers he selected for his study?
If Mr. Lopez found out that the population consists of 2,852 full-time college faculty members, what term describes the 450 teachers he selected for his study?
Which of the following is classified as a quantitative variable?
Which of the following is classified as a quantitative variable?
What distinguishes a qualitative variable from a quantitative variable?
What distinguishes a qualitative variable from a quantitative variable?
In the statement 'no more than 20 people passed the Intermediate Algebra class', what is being described?
In the statement 'no more than 20 people passed the Intermediate Algebra class', what is being described?
Which of the following represents a qualitative measure?
Which of the following represents a qualitative measure?
Flashcards are hidden until you start studying
Study Notes
Statistics Definition and Origins
- Statistics is a scientific discipline using numerical information for decision-making under uncertainty.
- It's a branch of mathematics involving data collection, organization, presentation, analysis, and interpretation for meaningful information.
- The term "statistics" originates from the New Latin "statisticum collegium" and the Italian "statista."
Two Major Areas of Statistics
- Descriptive Statistics: Organizes, presents, and summarizes data informatively (e.g., average age of students).
- Inferential Statistics: Uses sample data to make inferences about a population; involves hypothesis testing, determining relationships, and making predictions (e.g., testing the relationship between gender and academic performance).
Population vs. Sample
- Population: The entire group of objects or individuals under study.
- Sample: A subset taken from the population, often through random selection.
- Parameter: A descriptive measure of a population.
- Statistic: A descriptive measure of a sample.
Variable vs. Constant
- Variable: A characteristic where group members differ.
- Constant: A characteristic where group members do not differ.
Qualitative vs. Quantitative Variables
- Qualitative Variable: Takes on values that are names or labels; answers "what kind" (e.g., color, breed, gender).
- Quantitative Variable: Numeric; has units of measure; answers "how much" or "how many" (e.g., height, weight, number of cars).
Classification of Quantitative Variables
- Discrete Variable: Data that can be counted (whole numbers) (e.g., number of patients, number of boys).
- Continuous Variable: Data that can be measured (decimals) (e.g., age, height, weight).
Levels of Measurement
- Nominal: Data classified into categories without any order (e.g., eye color, gender).
- Ordinal: Data arranged in order, but differences between values are meaningless (e.g., rankings in a taste test).
- Interval: Data arranged in order, with meaningful differences, but no absolute zero (e.g., temperature).
- Ratio: Data with a meaningful zero point and meaningful differences (e.g., salary, weight).
Uses of Statistics
- Provides precise data descriptions.
- Predicts individual behavior.
- Tests hypotheses.
- Aids decision-making in various fields.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
