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Ungrouped or Raw Data
Computation of the mode
Example 8 Find the mode for the following seed weight 2 , 7, 10, 15, 10, 17, 8, 10, 2 gms ...Mode = 10 In some cases the mode may be absent while in some cases there may be more than one mode. Example 9 (1) 12, 10, 15, 24, 30 (no mode) (2) 7, 10, 15, 12, 7, 14, 24, 10, 7, 20, 10 the modal values are 7 and 10 as both occur 3 times each. Grouped Data Example
Solution Continuous distribution Where = lower limit of the model class = the frequency of the class preceding the model class and c = class interval = the frequency of the class succeeding the model class Example 10 For the frequency distribution of weights of sorghum ear-heads given in table below. Calculate the mode
Here 100, f = 45 , c = 20, m =60, =38, =35 = 109.589 Geometric mean For grouped data GM is used in studies like bacterial growth, cell division, etc. Example 11 If the weights of sorghum ear heads are 45,60,48,100 , 65 gms . Find the Geometric mean for the following data
= 60.95 Grouped Data Example 12 Find the Geometric mean for the following
Here n= 50
= Antilog 1.9842 = 96.43 |
Last modified: Friday, 16 March 2012, 5:46 PM