A Study of the Relative Reliability of Official Tests of Dairy Cows
The book A Study of the Relative Reliability of Official Tests of Dairy Cows was written by author W W William Wodin Yapp Here you can read free online of A Study of the Relative Reliability of Official Tests of Dairy Cows book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Study of the Relative Reliability of Official Tests of Dairy Cows a good or bad book?
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214. 40 80 3 240 720 4. 414. 60 33 4 132 528 4. 614. 80 26 5 130 650 4. 815. 00 13 6 78 468 5. 015. 20 5 7 35 245 5. 215. 40 8 8 64 512 5. 415. 60 4 9 36 324 5. 615. 80 3 10 30 300 5. 816. 00 4 11 44 484 6. 016. 20 12 6. 216. 40 13 6. 416. 60 1 14 14+1 200 196 1295 - 168 8970 Mean: 3. 679 . 010 Standard deviation: 0. 5256 . 0069 Coefficient of variability: 14. 29 . 18 SEMIOFFICIAL TEST The calculation of the mean, the standard deviation, and the co- efficient of variability for the semiofficial... test furnishes an added op- portunity for comparison. Table 6 shows the variability in percentage of fat for the semiofficial test. The mean, or average percentage of fat, for the semiofficial period is 3. 43 . 006 percent. It is true that this average test is based on a rather selected group of cows; but the probable error ( . 006) indicates that this group of 1, 295 is adequate to determine a reliable average percentage of fat for the class of cows making semiofficial tests. The standard deviation of .
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