Classify and Describe: Variable Quest!

It is the collection of units to which we want to generalize a set of findings

• Sample

• Population

• Parameter

• Statistic

It is a representative portion of the population that is selected for analysis

• Parameter

• Statistic

• Population

• Sample

A person's eye color (e.g., Brown, Blue, Green) is what type of variable?

• Qualitative

• Quantitative

• Continuous

• Discrete

Answer explanation

Eye color is a categorical variable since it describes a characteristic rather than a numerical value.

The time (in seconds) it takes for an athlete to complete a 100m sprint is what type of variable? There can be 2 answers.

• Discrete

• Quantitative

• Continuous

• Manifest

Answer explanation

Time is measured numerically and can have decimal values (e.g., 9.58 seconds), making it continuous.

Any summary measure that describes a characteristic of an entire population

• Population

• Parameter

• Sample

• Statistic

Describe Latent Variable in one word.

It refers to the methods that allow the estimation of a characteristic of a population or the making of a decision concerning a population based only on a sample.

• Descriptive Statistic

• Inferential Statistic

What formula is used to determine the sample size based on the population size or the least number of members which need to be included in the sample.

What type of variable is "Happiness Level" measured through a survey?

• Manifest

• Latent

• Discrete

• Continuous

Answer explanation

Happiness is a psychological concept that cannot be directly measured but is inferred from surveys or behaviors.

Blood pressure (measured in mmHg) is an example of which type of variable? There can be 2 possible answers.

• Qualitative

• Manifest

• Continuous

• Latent

Answer explanation

Blood pressure is directly observed using a device and has a numerical measurement, making it a manifest variable. Blood pressure can take decimal values (e.g., 120.5 mmHg, 121.3 mmHg). Since it is measured on a scale with precision, it is continuous rather than discrete.