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Grade: 12th pass

                        

An IQ test was administered to 5 persons before and after training. The results are given below: IQ before training: 110 120 123 132 125 IO after training: 120 118 125 136 121 Test whether there is any change in IQ after training programme. ( t 005(4)=2.78 )

3 years ago

Answers : (1)

Arun
24742 Points
							
-nd)/n-1)=sqrt(140-5(4))/5-1=5.673Hence there is no change of IQ after training2=100+4+4+16+16=140d=sum of d/n=10/2=5 and s=sqrt((d2The results are given below : I II III IV V I.Q before training 110 120 123 132 125I.Q after training 120 118 125 136 121deviation in each case is 10 -2 2 4 -4sum of d=10d
3 years ago
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