Week 1 Res 342

Calculating the p- appreciate when performing a t-test To examine the p- chance on after collusive the t-statistic you need to know the degrees of freedom you argon using and the real(a) t-statistic. We allow be using the t display board undercoat in the back of the book (Appendix D in the downloadable Appendices on your resource rogue). Let us use the apprise for the hassle found in Chapter 9 on page 373 of your e-text. You female genitalia see that the degrees of freedom are n-1 or 24 - 1= 23. Since we have 23 degrees of freedom and the deliberate t statistic is -1.534, and so we will use the haggling = to 23 and try to find the pry 1.534. Please visiting notice that I have dropped the (minus) - sign, since it and tells me I am to the left fall in of the curve. As you run to the upright along row 23, you will eventually notice that 1.534 falls between two values, 1.319 and 1.714. So this is where our calculated value belongs, so we then look up to the actual ly bring in of the chart using the row labeled Level of logical implication for a two Tailed Test, and notice the 1.319 pillar corresponds to 0.20 and the 1.714 column corresponds to 0.10 .

So the very best we dirty dog do manually is to reckon the p-value falls between 0.20 and 0.10. So that is all we can do manually with the p-value. If you look on page 373 in Chapter 9 there is this same explanation with a plat which susceptibility be just a tad clearer Also, there is mindless explanation of how one can use leap taboo to find the exact value You can use the right: =TDIST(t test statistic, degrees of freedom, tails) and in the book the example! is =TDIST(1.534,23,2) which yields a value of 0.13867. I hope this makes sense to you all. JerryIf you want to get a full essay, order it on our website: OrderCustomPaper.com

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