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What is the mean?
The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the total count of the numbers.
How do you calculate the mean?
To calculate the mean, sum all values in the dataset and divide by the number of values.
What is the mode?
The mode is the value that appears most frequently in a data set.
How can you find the mode in a dataset?
Identify the number that occurs most frequently; if all numbers occur with the same frequency, there is no mode.
What is the median?
The median is the middle value of a data set when the numbers are arranged in ascending or descending order.
How do you calculate the median for odd and even sets?
For odd sets, the median is the middle number. For even sets, it is the average of the two middle numbers.
What is a dataset with no mode called?
A dataset with no mode is called 'uniform' because all numbers appear with the same frequency.
Can a dataset have multiple modes?
Yes, a dataset can be bimodal (two modes) or multimodal (multiple modes) if two or more values appear with the same highest frequency.
How does the mean behave with outliers?
The mean is sensitive to outliers and can be skewed by extremely high or low values.
When is using the median preferable to the mean?
Using the median is preferable when a dataset contains outliers or is skewed, as it provides a better representation of the central tendency.
