Statistics: Samples and Parameters

The video tutorial explains the differences between population and sample data sets, as well as parameter and statistic. It highlights that a population includes all members of a specified group, while a sample is a subset of the population. Parameters are numerical measures describing a population, whereas statistics describe a sample. The video provides examples to help identify whether a given data set or measure is a population, sample, parameter, or statistic. The tutorial concludes with a summary and encourages viewers to ask questions in the comments.

What is the main difference between a population and a sample?

• A sample is always larger than a population.

• A population is a subset of a sample.

• A sample includes all members of a specified group.

• A population includes all members of a specified group, while a sample is a subset.

Why do researchers often use samples instead of entire populations?

• Samples are more accurate.

• Gathering data from an entire population is often too costly.

• Populations are too small to study.

• Samples provide more detailed information.

What is a parameter in statistical terms?

• A type of data collection method.

• A subset of a population.

• A numerical measure that describes a population.

• A measure that describes a sample.

How is a statistic different from a parameter?

• A statistic is a type of data collection method.

• A statistic is always larger than a parameter.

• A statistic is a numerical measure that describes a sample.

• A statistic describes a population, while a parameter describes a sample.

Which of the following is an example of a population?

• All students in a school.

• A sample of 100 cats in a city.

• The top 50 earning individuals in a country.

• A group of 30 patients in a hospital.

Identify the sample from the following options.

• All vendors in a public market.

• A group of 30 patients in a hospital.

• The total number of students in a school.

• The list of all countries in the world.

What is the average weight of all males in the Philippines considered as?

• A subset

• A sample

• A statistic

• A parameter

If the average height of 100 cats in a city is calculated, what is this measure called?

• A parameter

• A sample

• A population

• A statistic

Which of the following is a statistic?

• The total number of students in a school.

• The average test score of 20 students in a class of 500.

• The average daily allowance of all students in a class.

• The list of all countries in the world.

Based on a sample of 900 elementary students, it was found that 30 could not do long division. What is this finding?

• A sample

• A population

• A statistic

• A parameter