New PDF release: A Programmed Text in Statistics Book 4: Tests on Variance

By J. Hine

Exercises for part 2 forty two actual sciences and engineering forty two forty three organic sciences forty five Social sciences ideas to workouts, part 1 forty seven actual sciences and engineering forty seven forty nine organic sciences forty nine Social sciences strategies to workouts, part 2 fifty one fifty one actual sciences and engineering fifty five organic sciences fifty eight Social sciences sixty two Tables 2 sixty two x - checks related to variances 2 63,64 x - one tailed exams 2 sixty five x - tailed exams F-distribution 66-69 Preface This venture all started a few years in the past whilst the Nuffield beginning kindly gave a furnish for writing a professional­ grammed textual content to take advantage of with provider classes in records. The paintings performed by means of Mrs. Joan Hine and Professor G. B. Wetherill at tub college, including another aid now and then by way of colleagues at tub collage and in other places. checking out used to be performed at a number of faculties and universities, and a few important reviews have been bought, yet we really point out King Edwards university, bathtub, who supplied a few 6th formers as 'guinea pigs' for the 1st checking out, the Bishop Lonsdale university of schooling, and Bradford collage. 2 OUf goals within the textual content are to take scholars to using commonplace t, F and X checks, with a few intro­ duction to regression, assuming no wisdom of information to begin, and to do that in this kind of manner that scholars reach some extent of realizing of the underlying reasoning. carrier classes are frequently anything of an issue to statistical data departments.

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Extra info for A Programmed Text in Statistics Book 4: Tests on Variance and Regression

Example text

State the estimated regression coefficient. What interpretation would you place on this coefficient? Does this coefficient have the numerical value you would expect? Give resons. Coefficient of correlation 1. The table gives the weight of heart (x), and the weight of kidneys (y), in a random sample of 12 adult males between the ages of 25 and 55 years. Male No. 75 11. 81 Calculate the coefficient of correlation, r, and carry out the appropriate test of significance on r. 2. The table below gives the ages, x, and the blood pressure, y, of a sample of eight women.

A psychological study involved the rating of rats along a dominance-submissiveness continuum. In order to determine the reliability of the rating, the scores given by two different observers were tabulated. Calculate the regression of the scoring of observer B on that of observer A. 23456 Rat no. Score Observer A 12 Observer B 13 2 3 5 2 7 8 9 10 4 5 14 11 9 7 2 3 11 10 9 6 State the estimated regression coefficient. What interpretation would you place on this coefficient? ) you would expect? Give reasons.

068 which agrees with the fact that the 'rough' regression line slopes 'upwards'. 53. 48. e. 07 in carbon content as obtained by method B. ). In theory the regression coefficient should equal 1. Since for unit increase in carbon content as obtained by method A, the expected increase in that as obtained by method B is 1. Correlation 1. 33 . ). 632. 99 is significant. e. there is a Significant relationship between the amount of potassium bromide which will dissolve in 100 gm of water and the temperature of the water.

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