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What does it mean when p-value equals 1?
Popular Answers (1) When the data is perfectly described by the resticted model, the probability to get data that is less well described is 1. For instance, if the sample means in two groups are identical, the p-values of a t-test is 1.
Can ap value ever be 1?
The P stands for probability and measures how likely it is that any observed difference between groups is due to chance. Being a probability, P can take any value between 0 and 1.
Can likelihood interval be greater than 1?
Probabilities are measured over intervals, not single points. That is, the area under the curve between two distinct points defines the probability for that interval. This means that the height of the probability function can in fact be greater than one.
Is it possible for a p value to be 1?
It really depends on why the p-value is 1. In some cases the p-value is not truly 1 but this is just an artifact of the statistical software (for example, when SPSS does Bonferroni correction, it sometimes reports p-values of 1, but this is not accurate).
Can a p-value be 1.0 in their thesis?
In your case, the two groups (whatever they are) don’t have the same values so the p-value cannot really be 1: there clearly is some small difference between the groups, and thus some nonzero chance that another sample under a null hypothesis of 0 could get an even smaller difference. Can people report P-value = 1 in their thesis?
What does a lower p-value in statistics mean?
A lower p -value is sometimes interpreted as meaning there is a stronger relationship between two variables. However, statistical significance means that it is unlikely that the null hypothesis is true (less than 5%).
Can a p-value be 1.0 in Fisher exact test?
No..P-value can never be one, if real data are compared. I met it in Fisher Exact test (2×2 table) when one group contains 0 and 14 and the other group contain 4 and 78. However, when the second group contains 9 and 73, the p-value was 0.34.