7th Grade Statistics

Front

What is a biased sample?

Back

A biased sample is a group that does not accurately represent the population being studied, leading to skewed results.

Front

What is a random sample?

Back

A random sample is a group selected from a population in such a way that every individual has an equal chance of being chosen, ensuring a fair representation.

Front

Why is it important to use random sampling in surveys?

Back

Random sampling helps to eliminate bias, making the results more reliable and applicable to the entire population.

Front

What does it mean to predict in statistics?

Back

To predict in statistics means to make an educated guess about a future outcome based on existing data.

Front

If 85% of a group is satisfied, how do you calculate the number of satisfied individuals in a sample of 500?

Back

Multiply 500 by 0.85 (85%) to get 425 satisfied individuals.

Front

What is the difference between a population and a sample?

Back

A population includes all members of a specified group, while a sample is a subset of the population used for analysis.

Front

What is a survey?

Back

A survey is a method of collecting data by asking people questions to gather information about their opinions, behaviors, or characteristics.

Front

What is the purpose of conducting a survey?

Back

The purpose of conducting a survey is to gather information and insights about a specific topic or population.

Front

What is sampling error?

Back

Sampling error is the difference between the results obtained from a sample and the actual results that would be obtained from the entire population.

Front

How can bias affect survey results?

Back

Bias can lead to inaccurate conclusions, as it may overrepresent or underrepresent certain groups within the population.