Mean, Median, Mode, Range

Front

What is the definition of the mean in a data set?

Back

The mean is the average of a set of numbers, 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.

Front

How is the range of a data set calculated?

Back

The range is calculated by subtracting the smallest number in the data set from the largest number.

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.

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

How can outliers affect the mean of a data set?

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 data set?

Back

A data set is a collection of related data points or values, often organized in a table or list.

Front

Why is it important to understand measures of central tendency?

Back

Understanding measures of central tendency (mean, median, mode) helps summarize and interpret data effectively.

Front

What is the relationship between the mean, median, and mode in a normal distribution?

Back

In a normal distribution, the mean, median, and mode are all equal and located at the center of the distribution.