Algebra 2 Concepts Flashcard Review 11-1 to 11-3 PERIOD 3

Front

What is the mean of a data set?

Back

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

Front

What does standard deviation measure?

Back

Standard deviation measures the amount of variation or dispersion in a set of values. A low standard deviation means 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

How do you find the range of a data set?

Back

The range is found by subtracting the smallest value in the data set from the largest value.

Front

What is a simple random sample?

Back

A simple random sample is a sample in which every individual or object in the entire population has an equal chance of being selected.

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 to represent the whole.

Front

What is cluster sampling?

Back

Cluster sampling is a sampling method where the population is divided into clusters (groups), and entire clusters are randomly selected to be included in the sample.

Front

What is a statistical question?

Back

A statistical question is one that anticipates variability in the data and can be answered by collecting data.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values)

Front

What is the purpose of using standard deviation in statistics?

Back

Standard deviation helps to understand how spread out the data points are in relation to the mean.

Front

What is the significance of a high standard deviation?

Back

A high standard deviation indicates that the data points are spread out over a wider range of values, suggesting greater variability.