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So you need to find the p-value for your hypothesis test. To do so, employ the spreadsheet program.
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Nov 30, 2018 The Descriptive Statistics feature of data analysis tools is part of the 'Analysis ToolPak' add-in provided with Windows Excel, and it is not available for Excel 2011 for Mac. Instead, Microsoft recommends a third-party alternative.
Using a simple formula, you can easily determine the p-value for your tests and thereby conclude strong or weak support of the. Probability values, or p-values, were in statistics, though they've been around since the late-1700s.
This value, which determines the 'significance of results' in hypothesis testing, is used in, from economics to criminology. In short order, it tells us the how strong a claim or null hypothesis is. Will the null hypothesis be proven out? Or will it be rejected in favor of the alternative hypothesis? The answer lies with the p-value(s). Don't Miss: P-Value Formula & Arguments As said, when testing a hypothesis in statistics, the p-value can help determine support for or against a claim by quantifying the evidence. The Excel formula we'll be using to calculate the p-value is:.
=tdist(x,degfreedom,tails) Where the arguments are:. x = t. degfreedom = n-1. tails = 1 for a or 2 for a two-tail test. Four rows of values, broken down into p-value arguments. Image by meaniefiene/YouTube Significance Level & Testing A common significance level used is 0.05, which says that if the resultant p-value is equal to or less than 0.05, then there's strong evidence against the null hypothesis (and enter the alternative hypothesis).
If the p-value is greater, then the null hypothesis has merit. And so to solve the p-value in an Excel spreadsheet, simply select a cell and type in =t-dist( to bring up the formula and then type in the arguments, separating each by a comma. Image by meaniefiene/YouTube If we use 0.05 as the significance level, then from this set, what do we find? Considering the calculated p-values in column I in our examples above, we can conclude that all tests but the first ( p-value = 0.006413) have strong evidence in favor of the null hypothesis. Ready to carry out some hypothesis testing of your own?
As you fire up the Excel, check out the original tutorial below by YouTube user. While it's seen using an older version of Excel, the function works the exact same way on newer versions, no matter if you're using Excel on a Windows or Mac computer.