Understanding Population Parameters and Sampling Methods

A school has 600 students. If a survey is conducted with 60 students, what is the population parameter being estimated?

• The number of students surveyed (60)

• The total number of classes in the school

• The average age of the students

• The population of 600 students in the school.

In a city of 50,000 residents, a researcher surveys 1,000 people to understand their shopping habits. What sampling method is being used?

• Systematic sampling

• Stratified sampling

• Simple random sampling

• Cluster sampling

A farmer wants to know the average height of his corn plants in a field of 10 acres. He measures the height of 20 plants from a random section of the field. What is the population parameter in this scenario?

• The average height of all corn plants in the field.

• The average height of the 20 measured plants.

• The total number of corn plants in the field.

• The height of the tallest corn plant in the field.

A local government wants to know the average age of its residents. They randomly select 200 residents from a population of 10,000. What type of sampling method is this?

• Cluster sampling

• Simple random sampling

• Stratified sampling

• Systematic sampling

A researcher is studying the reading habits of teenagers in a town of 5,000. If she surveys 100 teenagers from different schools, what is the population parameter she is trying to estimate?

• The reading habits of all teenagers in the town.

• The reading habits of teenagers in the entire country.

• The academic performance of teenagers in the town.

• The social media usage of teenagers in the town.

In a survey of 500 people in a city of 30,000, 60% reported they prefer online shopping. What is the population parameter that this survey is estimating?

• The population parameter is the proportion of the entire population that prefers online shopping.

• The population parameter is the total number of people in the city.

• The population parameter is the average age of the respondents.

• The population parameter is the total number of people surveyed.

A scientist is studying the effects of a new fertilizer on plant growth. She randomly selects 50 plants from a greenhouse of 1,000. What is the population in this study?

• 50 plants in the study

• 1,000 plants in the greenhouse

• 1,000 seeds in the greenhouse

• 10 plants in the laboratory

A company wants to know how satisfied its customers are. They send a survey to 200 customers out of 2,000. What sampling method is being used here?

• Stratified sampling

• Systematic sampling

• Simple random sampling

• Cluster sampling

A health organization wants to find out the average weight of adults in a city of 25,000. They randomly sample 500 adults. What is the population parameter they are estimating?

• The average height of adults in the city.

• The average weight of adults in the city.

• The total weight of all adults in the city.

• The weight of the sampled adults only.

In a study of 1,000 students from a school district of 10,000, 70% said they enjoy math. What does this percentage represent in terms of population sampling?

• 70% of the sample represents the entire school district's opinion.

• The sample size of 1,000 students is too small to draw any conclusions.

• 70% of the sample indicates a preference for math, which can estimate the population's preference.

• 70% of the population enjoys math based on this sample alone.