P-values are usually calculated using statistical software or p-value tables based on the assumed or knownprobability distributionof the specific statistic tested. While the sample size influences the reliability of the observed data, the p-value approach to hypothesis testing specifically involves calcu...
What is a statistic? Definition, examples. Hundreds of statistics videos and articles. Online calculators. Free homework help forum.
What does SXX mean in statistics? SXX SXX is one of the components computed in finding the correlation and regression. It is a measure of variability. It is also known as the sum of squares of the variable x. Key Vocabulary: Standard Deviation:The formula for standard deviation uses the su...
What does it mean to say that a result is "not significant"? What is an exponential distribution (include a citation)? In statistics, explain the term "replacement". What is criterion-referenced testing? What is a likely consequence of not having enough statistical power? Explain. ...
A t-test is an inferential statistic used to determine if there is a statistically significant difference between the means of two variables. The t-test is a test used for hypothesis testing in statistics. Calculating a t-test requires the difference between the mean values from each data set...
Box 1: The null hypothesis is that does not have COVID. Box 2: The alternative hypothesis is that does have COVID. Box 3: In the absence of any better information, the prior probability of the null hypothesis is , or . Box 4: Similarly, the prior probability of the alternative ...
When the problem requires a real-valued statistic to be suitably large or suitably small, the following trivial observation is often employed: Proposition 1 (Comparison with mean) Let be a random real-valued variable, whose mean (or first moment) is finite. Then with positive probability, ...
I see far too many businesses trying to push their content in from the outside, when it’s far easier and more effective to become active in the community and push out from the inside. Not only does this allow you to grow trust and good will with the community that you w...
What is a variable in literature review? What are the definitions of stress and strain and what is the mathematical relationship between them? What does it mean when we say a test statistic is conservative? What is wrong with this sentence? A statistical hypothesis addresses whether a statement...
(Even the double intersection only exists information theoretically in a “virtual” sense; the mutual information allows one to “compute the entropy” of this “intersection”, but does not actually describe this intersection itself as a random variable.) However, this issue only arises with ...