Practical Appraisal Mathematics

Single item in a group

• population

• aggregate

• sample

• variate

A researcher wants to study the average height of all adult males in Quezon City. In this scenario, "all adult males in Quezon City" represents the:

• random sample

• population

• aggregate

• community

When all individual observations or measurements from a study are collected and viewed as a whole, this collection is referred to as the:

• Aggregate

• Variate

• Population

• Parameter

A key characteristic of a "random sample" is that:

• It includes only individuals who are easy to reach.

• Every member of the population has an equal chance of being selected.

• It is always larger than the population.

• It is specifically chosen to represent extreme values.

If a survey is conducted on 500 randomly selected students from a university with 20,000 students, then 500 represents the:

• Population

• Parameter

• Sample size

• Variate

Consider a study where the color of cars passing a certain intersection is recorded. For a single car, "blue" would be an example of a:

• Parameter

• Population

• Variate

• Sample Size

The "bell curve" is another common name for which statistical distribution?

• Uniform distribution

• Skewed distribution

• Normal distribution

• Exponential distribution

What is the defining characteristic of the overall appearance or "shape" of a normal distribution graph?

• It is always a straight line.

• It is symmetrical and resembles a bell.

• It is always skewed to one side.

• It has multiple distinct peaks.

Which of the following expressions equals 10?

• 20 ÷ 5 + 1

• 2 × 3 + 4

• 12 − 6 ÷ 2

• 5 + 5 × 0

A bottle is 2/3​ full of juice. If 0.25 of the remaining empty space is filled with water, what fraction of the bottle is now water?

• 1/12

• 1/8

• 1/6

• 1/4