Mean, Median, Mode, Range

Front

What is the mean of a data set?

Back

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

Front

How do you calculate the median of a data set?

Back

To find the median, arrange the numbers in ascending order and identify the middle number. If there is an even number of observations, the median is the average of the two middle numbers.

Front

What is the mode of a data set?

Back

The mode is the number 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

What is the range of a data set?

Back

The range is the difference between the largest and smallest numbers in a data set.

Front

What does it mean if a data set has no mode?

Back

If a data set has no mode, it means that no number appears more than once.

Front

What is the significance of the mean in statistics?

Back

The mean provides a measure of central tendency, giving an overall average of the data set.

Front

How can outliers affect the mean?

Back

Outliers can significantly skew the mean, making it higher or lower than the central tendency of the majority of the data.

Front

What is a bimodal data set?

Back

A bimodal data set is one that has two modes, meaning two numbers appear with the highest frequency.

Front

How do you find the mode in a data set with multiple modes?

Back

Identify all numbers that appear with the highest frequency; these numbers are the modes.

Front

What is the difference between mean and median?

Back

The mean is the average of all numbers, while the median is the middle value when the numbers are sorted.