Statistical Studies and Sampling Methods

A survey company was trying to see if people in a state thought the pollution was too high. Which choice BEST represents the population to be surveyed?

• A selection of people from each neighborhood in the state.

• A selection of people who live in small towns.

• Every person in the state.

• A selection of people who live in dirty neighborhoods.

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class.

• Convenience Sampling

• Systematic Random Sampling

• Simple Random Sampling

• Volunteer response

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She selects the five closest to her desk.

• simple random

• Self Selected.

• Convenience

• Systematic Random

What is a sample in the context of statistical studies?

• A full set of data about every member of the population

• A small group selected from the population

• The process of collecting data

• The outcome of an experiment

Why is it important to have a representative sample in a statistical study?

• To ensure the study is completed quickly

• To reduce the cost of the study

• To accurately reflect the characteristics of the population

• To make the study easier to conduct

In which type of sampling method are participants selected based on their availability?

• Random sampling

• Stratified sampling

• Cluster sampling

• Convenience sampling

What is the primary disadvantage of using a convenience sample?

• It is too time-consuming

• It is too expensive

• It may not accurately represent the population

• It requires advanced statistical methods

What is the main purpose of a statistical study?

• To express opinions

• To predict future events

• To understand and interpret data

• To manipulate data for desired outcomes

What does the term "population" refer to in statistical studies?

• The entire group of individuals that the study is interested in

• The group of individuals who participate in the study

• The sample selected for the study

• The researchers conducting the study

What sampling method are you using if you survey the students in the school whose names are picked out of a hat?

• Convenience

• Systematic

• Simple Random