Mean Median Mode and Range Questions and Revision

The 3 most common measures of central tendency are the mean, median and mode The mode is the most frequent value The median is the middle

The mean is the sum of all the values in a data set divided by the number of values, the median is the middle number when the values are in

777 meaning We know that in an ordered list of N values, the median is the value that falls in the middle If the ordered list has associated frequencies, then the median

ntr meaning In symmetric unimodal distributions, such as the normal distribution, the mean , median and mode all coincide For samples, if it is known that they