What is null hypothesis?
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The null hypothesis (H₀) is a statement in hypothesis testing that suggests there is no effect, relationship, or difference in the population or data being studied. It serves as the starting assumption for statistical tests, which aim to determine whether there is enough evidence to reject this assumption. If the null hypothesis is rejected, it suggests that there is a statistically significant effect or relationship.
Example: "There is no difference in average test scores between two groups of students.
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The null hypothesis is a statement in statistical testing that suggests there is no effect or no difference in a given population or between groups. It represents the assumption that any observed difference or relationship is due to random chance, and it is typically tested to be either accepted or rejected based on the evidence.