The Theme : MEASUREMENT OF CENTRAL VALUE

Data on the amount of dividends per share from 120 companies in the industrial sector food and drink are as follows (rtp/share):

Class	Frequency
20-29	5
30-39	8
40-49	10
50-59	15
60-69	25
70-70	20
80-89	15
90-99	12
100-109	10
Amount	120

requested; 1. calculate the average size using: a. average count b. average measure c. harmonic average 2. calculate the center value based on: a. Mode/mode b. median

example formula, etc :

di.m x = m + XL n