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Grade 12th passAlgebra

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. ( t005(4)=2.78)

Profile image of rajbir hazarika
8 Years agoGrade 12th pass
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1 Answer

Profile image of Arun
8 Years ago
-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

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