Statistics Flashcardizz

Front

What is 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

How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers in the data set together and then divide by the total number of values.

Front

What is the mode of a data set?

Back

The mode is the value that appears most frequently in a data set. A data set may have one mode, more than one mode, or no mode at all.

Front

How do you find the median of a data set?

Back

To find the median, first arrange the numbers in ascending order. If there is an odd number of values, the median is the middle number. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the formula for standard deviation?

Back

The formula for standard deviation (σ) is: σ = √(Σ(xi - μ)² / N), where μ is the mean, xi represents each value, and N is the number of values.

Front

What does a low standard deviation indicate?

Back

A low standard deviation indicates that the data points tend to be close to the mean of the data set.

Front

What does a high standard deviation indicate?

Back

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

Front

What is the difference between mean and median?

Back

The mean is the average of all values, while the median is the middle value when the data set is ordered. The mean can be affected by extreme values, while the median is more robust.

Front

How do you calculate the median for an even set of numbers?

Back

For an even set of numbers, arrange the numbers in order and take the average of the two middle numbers.

Front

What is a data set?

Back

A data set is a collection of related data points or values that can be analyzed to extract meaningful information.