Mean, Median and Mode

Mean :It is the sum (total) of all the values in a set of data, such as numbers or measurements, divided by the number of values on the list. To find the mean, add up all the values in the set. Then divide the sum by how many values there are. ... That is the mean.

Median: The medil[--e middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. The median is sometimes used as opposed to the mean when there are outliers in the sequence that might skew the average of the values.

Mode: The median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. The median is sometimes used as opposed to the mean when there are outliers in the sequence that might skew the average of the values.

Who invented mean, medin and mode? Edmund Halley

The term is first found in the mid-1690s in the writings of Edmund Halley (1656-1742), and it has been used to summarize observations of a variable since the time of Galileo (1564-1642).

What can median be used for? The median can be used to determine an approximate average, or mean, but is not to be confused with the actual mean. If there is an odd amount of numbers, the median value is the number that is in the middle, with the same amount of numbers below and above.

What can mode be used for? Mode is most useful as a measure of central tendency when examining categorical data, such as models of cars or flavors of soda, for which a mathematical average median value based on ordering can not be calculated.

What can mean be used for? The mean can be used to represent the typical value and therefore serves as a yardstick for all observations. ... An example would be comparing the mean number of annual training hours for women and for all employees. Comparisons Using Means. The mean is useful for furthter calculations.