By Larry Stephens
What before everything me during this booklet used to be its promise to teach the reader how you can use Excel for statistical research. during this admire, the publication didn't disappoint. What did disappoint, notwithstanding, used to be how little complicated statistical research you can still do with Excel. if you are new to stats as i used to be, this can come as a shock. should you imagine Excel is pretty much as good because it will get for statistical research, good, you are mistaken. that is the place the ebook veers into Minitab.
Minitab is natural statistical software program. It appears to be like much like Excel, yet is far extra robust the place statistical research is anxious. with a purpose to do complex statistics, then you definitely have to put money into anything like Minitab. There are different techniques, corresponding to R, SAS, Matlab, and so forth. yet this ebook chooses to target Minitab, most likely as a result of its favourite interface and comparatively low buy expense ($100).
I went forward and took the plunge and got a duplicate of Minitab. This determination made the e-book even more important to me. As you get deeper into the ebook, the various various research forms can in basic terms be performed (easily) with really expert software program similar to Minitab.
I accomplished the examples and workouts from begin to end and located the ebook to be very academic. You how one can perform the research, why you will are looking to do it, and the way to interpret the implications. What you don't get is mathematical justification for the research thoughts. whereas this might be great to have, i will be able to see the way it may heavily sidetrack the focal point of this publication (and triple its size). that allows you to be aware of, say, why a number of Regression works or the speculation in the back of ANOVA tables, then purchase a textbook or return to college. but when you must easily the way to practice statistical research utilizing Minitab and Excel, it is a nice e-book to begin with.
One complaint/suggestion: it might be great if the writer supplied a spouse site for the booklet the place the reader may possibly obtain the instance and workout information units. to be able to stick with besides an instance or practice an workout, you should manually input the information. To his credits, the writer retains many of the facts units small and achievable, yet there are a couple of which are too unwieldy for handbook access. that is the reason for four stars rather than 5.
A ultimate remark: i purchased this publication in the summertime of 2008 to paintings via in education for beginning a graduate software in information. I had no delusions it will placed me sooner than my classmates or provide me an aspect. i used to be simply searching for a few publicity to complex issues. After my first semester, during which I in most cases studied linear versions, I revisted the ebook and located it to be much more precious. the place my graduate university sessions concerned with mathematical motivation of research, this e-book is set software and interpretation of research. Re-reading it after a few graduate paintings helped pull jointly many of the significant subject matters of statistical research and gave a lot wanted that means and context to what I had simply learned.
If you are excited about complex statistical research and prepared to drop $100 on Minitab, then I hugely suggest this ebook.
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Additional resources for Advanced Statistics Demystified
Repeat problem 12 for a sample size of 20 with everything else remaining the same. Give your answers, using Excel, to do your computations. ’’ There were 237 ‘‘yes’’ responses. Set a 95% conﬁdence interval on the population proportion that would respond yes. An industrial process dyes materials. It is important that the color be uniform. A color-o-meter records colors at various times in the process. 45. Set a 95% conﬁdence interval on the population standard deviation. Find the following areas under the given curves (Figures I-22– I-25 respectively).
1-9. Fig. 1-10. 43 44 CHAPTER 1 Two-Sample Inferences SOLUTION The Excel solution is shown in Figs. 1-8 through 1-10. The pull-down Tools ) Data Analysis gives the dialog box shown in Fig. 1-8. The Excel dialog box for t-Test: Paired Two Sample for Means is filled as shown in Fig. 1-9. The output is shown in Fig. 1-10. The one-tailed p-value is given on row 11 of Fig. 1-10. 43. 43 and the null hypothesis that the mean loss is 10 pounds or less could not be rejected. 1-4 Comparing Two Population Percents: Independent Samples Purpose of the test: The purpose of the test is to compare two populations with respect to the percent in the populations having a particular characteristic.
N À 1ÞS2 ðn À 1ÞS2 , 2=2 21À=2 The symbol 2=2 represents a value from the chi-square distribution with n À 1 degrees of freedom having /2 area to its right; 21À=2 is a value from the chi-square distribution with n À 1 degrees of freedom having 1 À /2 area to its right. The Excel solution is shown in Fig. I-14. 511236). Fig. I-14. This chapter has given a review of the basics of statistical inference concerning a single population parameter. Conﬁdence intervals and tests of hypotheses have been discussed for means, proportions, and variances.