Proportions
What can be concluded about statistical significance if an experiment with high variability yields a large p-value?
High variability ensures that any observed effects are practical significant even if they're not statistically significant according to this test result.
The experiment surely has flaws since high variability should always yield low p-values due to chance outcomes being likely outliers.
The data do not provide strong enough evidence against the null hypothesis at typical levels of such as .05 or .01.
The null hypothesis can be accepted given that high variability and large p-values suggest consistency with hypothesized distribution under .
What does a small p-value imply about data obtained from an experiment if we assume that all other conditions for inference have been met?
Data supports or proves the alternative hypothesis absolutely.
Data is too varied to make any inference about hypotheses.
Data is consistent with both hypotheses and inconclusive.
Data is inconsistent with the null hypothesis.
In statistical terms, what would be indicated by a very low p-value from a significance test?
Proof beyond any doubt that your experimental intervention was successful and effective.
Confirmation that other researchers will obtain exactly similar results when repeating your experiment.
A guarantee that there are no errors present in your experimental design or data collection methods.
Strong evidence against the null hypothesis, supporting consideration for its rejection.
If a researcher concludes there is a significant effect when their p-value is 0.049, which of the following scenarios would lead to not rejecting the null hypothesis at the 0.05 significance level?
An increase in the effect size with other variables held constant.
A slight increase in the p-value due to rounding errors.
A decrease in the sample size while keeping other variables constant.
A reduction in variability within the sample data without changing other factors.
Given only one dataset yields a small large difference between observed expected counts what could potentially affect interpretation off derived P value?
Too many degrees of freedom making minor differences appear misleadingly significant
Presence of confounding factors could mislead strength of association indicated by small p-value
Measurement error uniformly affecting all observations reducing accuracy but not directly impacting p-value
Single outlier might artificially inflate statistic driving down p-value
What does a small p-value tell you about the observed sample?
The observed sample does not meet pre-test criteria
The observed sample is not significantly different from what we would expect to see by chance alone
The observed sample is unlikely to have occurred by chance
The observed sample was biased
If a null hypothesis is true, which of the following p-values would indicate the strongest evidence against it?
0.10
0.05
0.20
0.01

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If a study finds a low p-value for the correlation between the consumption of chocolate and improved cognitive function, what is the most appropriate conclusion?
The evidence suggests that there is an association between chocolate consumption and cognitive function, but causation cannot be determined.
The p-value indicates that the sample data might not accurately represent the population regarding chocolate and cognition.
Eating chocolate causes improved cognitive function since the p-value is low.
Chocolate consumption has no effect on cognitive function as correlation does not imply causation.
If you have a high p-value, such as 0.85, from your statistical test, what decision would you likely make about your null hypothesis?
Your result suggests that there's an error in your experimental design or data collection.
You would fail to reject the null hypothesis due to lack of evidence against it.
You conclude that your alternative hypothesis has an 85% chance of being true.
You would reject the null hypothesis because there's strong evidence against it.
What is the purpose of using the p-value in statistical analysis?
To assess the statistical power of the test.
To determine the practical significance of the results.
To evaluate the reliability of the sample data.
To determine the statistical significance of the observed results.