Random/Biased Samples and Making Statistical Inferences

Front

What is a sample in statistics?

Back

A sample is a part of a group being surveyed.

Front

What is the population in a survey?

Back

The population is the entire group of objects or individuals considered for a survey.

Front

What does it mean for a sample to be representative?

Back

A representative sample accurately reflects the characteristics of the population from which it is drawn.

Front

What is a biased sample?

Back

A biased sample is one that does not accurately represent the population, leading to skewed results.

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger population, where each individual has an equal chance of being selected.

Front

How do you find the mean of a set of numbers?

Back

To find the mean, add all the numbers together and divide by the total count of numbers.

Front

Calculate the mean of these numbers: 5, 11, 2, 12, 4, 2.

Back

The mean is 6.

Front

What is statistical inference?

Back

Statistical inference is the process of drawing conclusions about a population based on a sample.

Front

Why is it important to have a large sample size?

Back

A larger sample size reduces the margin of error and increases the reliability of the results.

Front

What is the difference between a sample and a population?

Back

A sample is a subset of a population, while the population includes all individuals or items of interest.