The midpoint of a class interval is midway between the _____ limits of the interval

Approximately __________ percent of doctor visits are the result of complaints by individuals who are worried that something is seriously wrong, even though no medical cause is found to explain their symptoms.

A. 10 B. 20 C. 25 D. 35

For the following sample of scores, 1, 1, 2, 2, 2, 2, 4,

a. find the mean, median, and mode. b. if a new individual with a score of X = 2 is added to the sample, what happens to the values for the mean, the median, and the mode? c. if the score X = 4 in the original distribution is changed to X = 11, what happens to the values for the mean, the median, and the mode?