3 causes of data loss

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... makes use of the following routine for computing the mean and variance of a set of numbers, 620 Chapter 14. Statistical Description of Data Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC ... continuous data into binned data, by grouping the events into specified ranges of the continuous variable(s): declinations between 0 and 10 degrees, 10 and 20, 20 and 30 , etc. Binning involves a loss of ... 1 degrees of freedom. The routine is #include <math.h> void tptest(float data1 [], float data2 [], unsigned long n, float *t, float *prob) Given the paired arrays data1 [1 n] and data2 [1 n] ,...

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... too late to learn! 3. Homework (2m) - Ask Ss to review the relative pronouns 4. Where are the eggs were in the fridge… A. who B. where C. when D. which 5. What was the name of the man .wife … became ... for your letter you … told me a very interesting story of your holiday A. on which B. which C. in which D. to which Answers: 1. A 2. B 3. A 4. D 5. C 6. D 7. A 8. C 9. D 10. C Knowledge is power....

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... create a new DataTable object, optionally supplying a table name. C# System .Data. DataTable unnamedTable = new System .Data. DataTable(); System .Data. DataTable namedTable = new System .Data. DataTable("Customer"); Visual ... Date 8 /3/ 1985 2/12/20 03 12 /30 /1948 2 27 Toru 12 /30 /1948 FIGURE 2-1 Logical and physical table layouts. The DataTable Class The three main classes that make up a data table are DataTable, DataColumn, ... New System .Data. DataTable() Dim namedTable As New System .Data. DataTable("Customer") Dwonloaded from: iDATA.ws Chapter 2 Building Tables of Data 19 After you create a DataTable,...

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... 610 Chapter 14. Statistical Description of Data Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN 0-521- 431 08-5) Copyright (C) 1988-1992 by Cambridge University ... measures of central tendency, the moments of a distribution, the median and mode. In Đ14.2 we learn to test whether different data sets are drawn from distributions with different values of these ... of integer powers of the values. Best known is the mean of the values x 1 , ,x N , x= 1 N N  j=1 x j (14.1.1) which estimates the value around which central clustering occurs. Note the use of an...

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... M 2 I 3 = M 3 I 4 = M 4 − 3M 2 2 I 5 = M 5 − 10M 2 M 3 I 6 = M 6 − 15M 2 M 4 − 10M 2 3 +30 M 3 2 (14.1.11) Notice that the skewnessand kurtosis, equations(14.1.5) and (14.1.6) are simple powers of ... only available estimator of this 614 Chapter 14. Statistical Description of Data Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN 0-521- 431 08-5) Copyright (C) 1988-1992 ... process of order N log N. You might rightly think 612 Chapter 14. Statistical Description of Data Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN 0-521- 431 08-5) Copyright...

Ngày tải lên: 24/10/2013, 15:15

... D.A. 1952, Annals of Mathematical Statistics , vol. 23, pp. 1 93 212. [2] Darling, D.A. 1957, Annals of Mathematical Statistics , vol. 28, pp. 8 23 838 . [3] Michael, J.R. 19 83, Biometrika , vol. ... numbers of data points, the formula analogous to (14 .3. 2) is χ 2 =  i (  S/RR i −  R/SS i ) 2 R i + S i (14 .3. 3) where R ≡  i R i S ≡  i S i (14 .3. 4) are the respective numbers of data points. ... the data sets are drawn from the same distribution. Small values of prob show that the cumulative distribution function of data1 is significantly different from that of data2 . The arrays data1 and data2 are...

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... D.A. 1952, Annals of Mathematical Statistics , vol. 23, pp. 1 93 212. [2] Darling, D.A. 1957, Annals of Mathematical Statistics , vol. 28, pp. 8 23 838 . [3] Michael, J.R. 19 83, Biometrika , vol. ... . 1. red # of red males N 11 # of red females N 21 # of green females N 22 # of green males N 12 # of males N 1 ⋅ # of females N 2 ⋅ 2. green # of red N ⋅ 1 # of green N ⋅ 2 total # N Figure ... n ij ) 2 n ij (14.4 .3) The number of degrees of freedom is equal to the number of entries in the table (product of its row size and column size) minus the number of constraints that have arisen from our use of...

Ngày tải lên: 28/10/2013, 22:15

... 638 Chapter 14. Statistical Description of Data Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN 0-521- 431 08-5) Copyright (C) 1988-1992 ... respectively, the number of data points in the measurement of r 1 and r 2 . All of the significances above are two-sided. If you wish to disprove the null hypothesis in favor of a one-sided hypothesis, ... coefficient. xt=x[j]-ax; yt=y[j]-ay; sxx += xt*xt; syy += yt*yt; 636 Chapter 14. Statistical Description of Data Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN 0-521- 431 08-5) Copyright (C) 1988-1992...

Ngày tải lên: 07/11/2013, 19:15

... significance of a nonzero r s .Itis also possible to test the significance of D directly. The expectation value of D in the null hypothesis of uncorrelated data sets is D = 1 6 (N 3 − N) − 1 12  k (f 3 k − ... − 1 12  k (f 3 k − f k ) 1 12 m (g 3 m g m )(14.6.6) its variance is Var ( D )= (N1)N 2 (N +1) 2 36 ì 1 k (f 3 k f k ) N 3 − N  1−  m (g 3 m −g m ) N 3 −N  (14.6.7) and it is approximately ... 1-800-872-74 23 (North America only),or send email to trade@cup.cam.ac.uk (outside North America). en=n; en3n=en*en*en-en; aved=en3n/6.0-(sf+sg)/12.0; Expectation value of D, fac=(1.0-sf/en3n)*(1.0-sg/en3n); vard=((en-1.0)*en*en*SQR(en+1.0) /36 .0)*fac;...

Ngày tải lên: 07/11/2013, 19:15

... http://www.nr.com or call 1-800-872-74 23 (North America only),or send email to trade@cup.cam.ac.uk (outside North America).  3 −2 −1 01 23 3 −2 −1 0 1 2 3 .11 | .09 .65 | .26 .12 | .09 .12 | .56 Figure ... difference (ranging both over data points and over quadrants) of the corresponding integrated probabilities. When comparing two data sets, the value of D may depend on which data set is ranged over. ... in Đ 13. 6. Data smoothing is probably most justied when it is used simply as a graphical technique, to guide the eye through a forest of data points all with large error bars; or as a means of making initial...

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