Population and Sample

A survey will be given to 100 students randomly selected from the freshmen class at Lincoln High School. What is the population?

• the 100 selected students

• all freshmen at Mandaluyong High School

• all students at Mandaluyong High School

A survey will be given to 100 students randomly selected from the freshmen class at Lincoln High School. What is the sample?

• the 100 selected students

• all freshmen at Mandaluyong High School

• all students at Mandaluyong High School

Fifty bottles of water were randomly selected from a large collection of bottles in a company's warehouse. These fifty bottles are referred to as the ___________ .

• Parameter

• Population

• Sample

Fifty bottles of water were randomly selected from a large collection of bottles in a company's warehouse. The large collection of bottles is referred to as the _____________ .

• Parameter

• Population

• Sample

What would be the population in this example? Surveyors in a mall choose shoppers to ask about products they prefer.

• the surveyors

• the shoppers who were asked their preferences

• all shoppers in the mall

What would be the sample in this example? Surveyors in a mall choose shoppers to ask about products they prefer.

• the surveyors

• the shoppers who were asked their preferences

• all shoppers in the mall

It involves random selection, allowing you to make strong statistical inferences about the whole group. It is mainly used in quantitative research.

• Probability Sampling

• Non-probability sampling

• Population

Identify the Sample: A restaurant wants to know if customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.

• 20 customers

• 8 customers

• All customers

• Dessert

Identify the Population: Mandaluyong High School randomly selected 230 teachers to find out which technology resource is the most effective.

• 230 Teachers

• Students

• All teachers

• Mandaluyong High School

A school randomly chose ten English teachers and asked them which type of juice their students would prefer. Which reason best shows why this sample is biased?

• The sample didn't include students.

• The sample can only be accurate if each teacher is included in the sample

• The sample is too small.

• English teachers don't drink juice!