Educational Research Design and Variables Quiz

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Which type of scale has all the characteristics of a nominal scale and an ordinal scale, but is also based upon predetermined equal intervals?

Qualitative Variable

Independent Variable

Quantitative Variable

Interval Scale (correct)

What is an example of a qualitative variable?

Salary

Number of Children

Gender (correct)

Height

What represents an interval scale according to the text?

Independent Variables

Qualitative Variables

Achievement Tests (correct)

Dependent Variables

In the context of the text, what do independent variables represent?

Variables controlled by the researcher Signup and view all the answers

What is measured as the performance in first year college, making it a dependent variable?

High School Grade Signup and view all the answers

Why does an interval scale not have a true zero point according to the text?

It has arbitrary maximum and minimum scores Signup and view all the answers

What is the difference between a population and a sample?

Population is the total group of individuals, while sample is a subset used to gather information. Signup and view all the answers

What is a parameter in statistics?

A numerical characteristic of a population. Signup and view all the answers

In statistics, what does inferential statistics aim to do?

Draw inferences about a population based on a sample. Signup and view all the answers

What type of statistics is used to summarize numerical data such as test scores and ages?

Descriptive Statistics Signup and view all the answers

When studying relationships between variables like mental ability and performance, what aspect of statistics is being utilized?

Discovering relationships among variables Signup and view all the answers

What is the purpose of selecting a sample from a population in statistics?

To accurately represent the entire population. Signup and view all the answers

What is a variable in the context of educational research?

An attribute of persons or objects that can take on different values Signup and view all the answers

Which of the following is an example of a continuous variable?

Educational Attainment (elementary graduate vs. high school graduate vs. bachelor’s degree holder) Signup and view all the answers

What distinguishes discrete variables from continuous variables?

Discrete variables are measured by counting or enumeration, while continuous variables correspond to line intervals Signup and view all the answers

What is the level of measurement for nominal scales?

No numerical value, just categories Signup and view all the answers

How are variables classified based on their values?

By whether they are discrete or continuous Signup and view all the answers

Why is it important for researchers to organize their studies carefully?

To ensure the data collected is accurate Signup and view all the answers

What is the role of statistics in predicting demand for education?

To estimate future enrolment of students to ensure adequate educational resources Signup and view all the answers

In the context of education, what does statistics refer to in its singular sense?

A branch of science dealing with gathering and interpreting data Signup and view all the answers

What purpose does statistics serve for educational financing agencies like DepEd and CHED?

To build a database for education research Signup and view all the answers

How is statistics helpful in analyzing the efficiency of the educational system?

By controlling the efficiency of educational plans and programs Signup and view all the answers

Which aspect of education does statistics NOT provide information on in the given text?

Data on national weather patterns Signup and view all the answers

What distinguishes statistics in its plural sense from its singular sense?

The set of numerical data gathered systematically Signup and view all the answers

What does a score of 0 on an IQ test indicate?

Lowest level of performance possible on the test Signup and view all the answers

Which type of scale allows for scores to be added and subtracted, but not multiplied or divided?

Interval scale Signup and view all the answers

Why can't we say that a person with a measured IQ of 140 is twice as smart as a person with a measured IQ of 70?

Intelligence does not increase linearly with IQ scores Signup and view all the answers

Which type of scale ranks subjects in order from highest to lowest?

Ordinal scale Signup and view all the answers

In what way do ratio scales differ from interval and ordinal scales?

Ratio scales allow for multiplication and division Signup and view all the answers

Why is it incorrect to assume that a score of 200 on an IQ test indicates ultimate intelligence?

Scoring high doesn't guarantee ultimate intelligence Signup and view all the answers