P-value having E in it(4.12E-67) is significant or not????

[lalit.dbe09]

Hello,

P-value having E in it(4.12E-67) is significant or not????
i asking regarding p-value in  Chi-square test for independence.....

Thanks,
 Lalit.

[Neeraj Kaushik]

Dear Lalt

The purpose of hypothesis testing in Chi sq test is to check whether the categories of 2 var(s) were found to be associated or not?

When p-value<0.05 it indicates that the categories are related.

p-value of 4.02E-67 indicates the it is a very small value like 

0.0000000000000000000000000000000000000000000000000000000000000000402 So this indicates that the categories of ur var(s) are related. But u must be careful that none of the cell shd have expected count <5  Best wishes Neeraj

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[lalitdbe09 .]

hello Sir,

 Does it mean that E value is invalid and it does not help in deciding whether the p-value (e.g. 3.28E 12) is significant or not..????

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Thanks & Regards,
Lalit Mahajan

[Neeraj Kaushik]

Whenever p-value>0.05 we accept the null hypothesis.
p-value of 3.28E12 means it is 3.28x10 power 12 i.e. 32800000000 a very lareg no. but its not possible as max probability can be 1
p-value of 3.28E-12 means it is 0.000000000003280, a very small no. and hence Null hypothesis will not be accepted.