Lesson 3: Data Management
Cards (62)
- It is the science of collecting, organizing, presenting, describing, and interpreting data.
- The 2 types of statistics:
- collection, organization, presentation, and description of sample data
- making decisions and drawing conclusions about populations
- (?) A teacher computes the average grade of her students and then determines the top ten students.
- (?) A manager or a business firm predicts future sales of the company based on present sales.
- (?) A psychologist investigates if there is a significant relationship between mental age and chronological age.
- (?) A researcher studies the effectiveness of a new fertilizer to increasing food production.
- (?) A janitor counts the number of various pieces of furniture inside the school.
- (?) A sports journalist determines the most popular basketball player for this year.
- (?) A school administrator forecasts the future expansion of the school.
- (?) A market vendor investigated the most popular brand of vinegar.
- (?) An engineer calculates the average height of the building along Taft Avenue.
- (?) A dermatologist tests the relative effectiveness of a new brand of medicine in curing pimples and other skin diseases.
- It refers to the totality of individuals or observations from people, objects, or events which have common observable characteristics that fall within the scope of investigation or from which information is desired to be studied by a researcher.
- A subset of the population.
- (?) Total number of Grade 11 WCC students SY 2022-2023: 210 students.
- (?) Grade 11 Lily: 34 students.
- It refers to any numerical value or measurement describing a characteristic of a population.
- It refers to any numerical value or measurement describing a sample.
- (?) The researcher uses the whole population of Grade 11 WCC students to get the average allowance.
- (?) The researcher used the sample of Grade 11 Lily to get the allowance for Grade 11 WCC students.
- It is a process of systematic assigning of value to a variable for the purpose of coming new information about the objects being measured.
- It refers to any raw materials which are facts gathered about the sample or population under study.
- They are records that do not vary, and they only maintain a single value.
- They are characteristics or properties of a population or sample which can be measured or classified that make the members of the group vary or differ from one another.
- (?) Age, height, and weight are examples of...
- The 2 types of variables:
- These variables are those that cannot be assigned numerical values but are placed into distinct categories determined by some attributes or characteristics.
- These are variables that can take up numerical values, hence can be ranked or ordered.
- The 2 variables under Quantitative:
- These variables assume values that can be counted.
- These variables can assume an infinite number of values between any two specific boundary values.
- This classifies into mutually exclusive (non-overlapping), exhausting categories in which no order or ranking can be imposed on the data.
- This classifies data into categories that can be ranked or ordered, but precise differences do not exist between these categories.
- The 2 classifications of Qualitative:
- (?) Number of road accidents in a year.
- (?) The time a student takes to walk to school.
- (?) Religions of Psychology students in WCC.