Below is a sample of share prices (in dollars) for a particular stock, selected at random over several years:   276 272 268 232 249 257 240 232 259 233 262 259 247 247 256 247 234 274 276 268 249 240 259 262 247 256 234 272 232 257 232 233 259 247 247 274     Use Excel (or other form of electronic assistance) to find the mean, median, mode, and standard deviation for this sample. Mean =  Median =  Mode =

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.