What do you mean by dispersion? Distinguish between absolute and relative measures of dispersion. Ten typists applying for a job in a company made the following scores in a typing speed test.

 

Applicants	1	2	3	4	5	6	7	8	9	10
Speed (word/min)	55	56	80	71	87	62	76	90	73	68

Compute mean, median, range and standard deviation of above data.