Parameter & Statistic

Statistic and Parameter

Understand Me!

Directions: Identify which of the cases involves measures from a population and a sample.

1. A researcher randomly selected a sample of 1000 people in Barangay, 143 and asked if they used a certain coffee product and 40% of them said yes.

2. A researcher interviewed all the students in a certain school to identify their insights about their favorite shoe brand. Analysis: In the first case the researcher measures f

Understand Me!

1. A researcher randomly selected a sample of 1000 people in Barangay, 143 and asked if they used a certain coffee product and 40% of them said yes.

2. A researcher interviewed all the students in a certain school to identify their insights about their favorite shoe brand. Analysis: In the first case the researcher measures f

In the first case the researcher measures for a sample. Only 40% out of 100 said yes. While in the second case the researcher measures the population because the researcher interviewed all the students of that school.

Parameter

• A parameter is a descriptive population measure.

• It is a measure of the characteristics of the entire population (a mass of all the units under consideration that share common characteristics) based on all the elements within that population.

Examples of Parameter

• All people living in one city, all-male teenagers worldwide, all elements in a shopping cart, and all students in a classroom.

• The researcher interviewed all the students of a school for their favorite apparel brand.

Statistic

• Statistic is the number that describes the sample.

• It can be calculated and observed directly.

• The statistic is a characteristic of a population or sample group. You will get the sample statistic when you collect the sample and calculate the standard deviation and the mean.

• You can use sample statistic to draw certain conclusions about the entire population.

Examples of Statistic

• Researchers interviewed the 70% of covid-19 survivors.

• Fifty percent of people living in the U.S. agree with the latest health care proposal. Researchers can’t ask hundreds of millions of people if they agree, so they take samples or part of the population and calculate the rest.

Multiple Choice

Determine the statement whether it is true or false.

A statistic is a number which describes a sample.

• TRUE

• FALSE

Multiple Choice

Determine the statement whether it is true or false.

A parameter is a descriptive measure of population.

• TRUE

• FALSE

Multiple Choice

Determine the statement whether it is true or false.

An example of parameter is the sample mean.

• TRUE

• FALSE

Multiple Choice

Determine the statement whether it is true or false.

The value of a parameter can be approximated and is not necessarily equal to the statistic of a sample.

• TRUE

• FALSE

Multiple Choice

Determine the statement whether it is true or false.

 An example of statistic is a population mean.

• TRUE

• FALSE

Multiple Choice

Determine the statement whether it is parameter or statistic.

Studying the average income of all households in a country.

• Parameter

• Statistic

Multiple Choice

Determine the statement whether it is parameter or statistic.

The standard deviation of the heights of all adult males in the Philippines.

• Parameter

• Statistic

Multiple Choice

Determine the statement whether it is parameter or statistic.

The average income of 40 out of 100 households in a certain Barangay is

    P12, 213.00 a month.

• Parameter

• Statistic

Multiple Choice

Determine the statement whether it is parameter or statistic.

Percentage of red cars in the Philippines.

• Parameter

• Statistic

Multiple Choice

Determine the statement whether it is parameter or statistic.

Number of senior high schools in Region 2.

• Parameter

• Statistic

Multiple Choice

Determine the statement whether it is parameter or statistic.

A recent survey of a sample of 250 high school students reported the

    average weight of 54.3 kg.

• Parameter

• Statistic

Multiple Choice

Determine the statement whether it is parameter or statistic.

Average age of students in Aritao National High School.

• Parameter

• Statistic