F24 - M3 - Practice: Statistics

Front

What is the definition of standard deviation?

Back

Standard deviation is a measure of the amount of variation or dispersion in a set of values. A low standard deviation indicates that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range.

Front

What happens to the margin of error (ME) if the standard deviation increases?

Back

If the standard deviation increases, the margin of error (ME) will increase as well, indicating a wider range of possible values.

Front

What is a sample in statistics?

Back

A sample is a subset of a population that is used to represent the entire group. It is selected to make inferences about the population without having to study the whole group.

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 smaller group selected from the population for the purpose of analysis.

Front

What is the formula for calculating the margin of error (ME)?

Back

Front

What type of study involves manipulating variables to determine cause and effect?

Back

An experiment is a type of study that involves manipulating one or more variables to determine their effect on another variable.

Front

What is an observational study?

Back

An observational study is a type of study where the researcher observes and records behavior without manipulating any variables.

Front

What is a random sample?

Back

A random sample is a sample that is selected from a population in such a way that every member of the population has an equal chance of being chosen.

Front

What is the purpose of using a sample survey?

Back

The purpose of a sample survey is to gather information about a population by collecting data from a representative subset.

Front

What does it mean if a sample is biased?

Back

A biased sample is one that does not accurately represent the population from which it was drawn, leading to skewed results.