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.
What does a p-value tell you about your statistical test?
The probability that the null hypothesis is false
The likelihood of making a Type II error in your test
The probability of observing your data, or more extreme, if the null hypothesis is true
The proportion of data points exceeding your test statistic value
What should you consider if your study yields a P-value greater than your chosen significance level?
The high P-value automatically invalidates all of your research findings.
You conclude that the null hypothesis cannot possibly be true given your results.
Your data collection process must have been compromised leading to this outcome.
You fail to reject the null hypothesis as there is insufficient evidence against it.
How should research interpret a obtained p-value of 0.05 when using a significant level of 0.05 without further context surrounding the result?
P-value is considered marginal and calls for caution in rejecting null hypothesis.
The null hypothesis should not be rejected given lack of strong evidence given by the p-value.
The p-value lacks reliability until cross-validated with another method or study.
The null hypothesis must be rejected given evidence against it provided by p-value.
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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What do we call the difference between the third quartile and first quartile in a data distribution?
Standard deviation
Variance
Interquartile range
Range
If you were to square all of the deviations from the mean before averaging them, which measure of spread are you calculating?
Mean absolute deviation
Standard deviation
Variance
Interquartile range
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.