Length of School Years The lengths of school years in a sample of various countries in the world are shown. Find the mean, median, midrange, and mode of the data. 250 241 229 213 199 184 177   Find the mean. Rounding rule for the mean: round to one more decimal place than the data as needed. Mean Find the median. Median Find the midrange. Midrange Find the mode(s).   If there is more than one mode, separate them with commas. Select "None" if applicable.   Mode(s)

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.