Permutation tests - People Server at UNCW

... – randomly "sample" all the m+n observations so there are m in group1 and n in group2. – compute the difference between the means of the two groups of the "sampled" vector, D. – repeat this procedure a large number of times (1000 or larger). For an upper-tailed test, calculate the empirical p-value: ...

... – randomly "sample" all the m+n observations so there are m in group1 and n in group2. – compute the difference between the means of the two groups of the "sampled" vector, D. – repeat this procedure a large number of times (1000 or larger). For an upper-tailed test, calculate the empirical p-value: ...

Chapter 8 Minitab Recipe Cards

... respectively) in the First row and the equivalent figures for the premium sample (17, 33.4 and 1.1) in the Second. • For the pooled estimate of the standard error tick Assume equal variances. ...

... respectively) in the First row and the equivalent figures for the premium sample (17, 33.4 and 1.1) in the Second. • For the pooled estimate of the standard error tick Assume equal variances. ...

∑ ( ) ( )

... sx = n n −1 n n −1 ∑ zxz y z = x − x z = y − y r= x y n −1 sx sy sy b=r a = y − bx yˆ = a + bx residual = y − yˆ sx Sampling Distribution of p̂ : ...

... sx = n n −1 n n −1 ∑ zxz y z = x − x z = y − y r= x y n −1 sx sy sy b=r a = y − bx yˆ = a + bx residual = y − yˆ sx Sampling Distribution of p̂ : ...

Ch 5 Elementary Probability Theory

... A sampling method is independent when the individuals selected for one sample do not dictate which individuals are in a second sample. Randomly divide seniors into two groups then test using different curriculums. Randomly divide patients into two groups and test a new medication giving one grou ...

... A sampling method is independent when the individuals selected for one sample do not dictate which individuals are in a second sample. Randomly divide seniors into two groups then test using different curriculums. Randomly divide patients into two groups and test a new medication giving one grou ...

Lecture2

... • Consider all M possible permutations of the labels, obtaining the test statistics, t1, …, tM. • Under H0, t1, …, tM are all generated from the same underlying distribution that generated t. ...

... • Consider all M possible permutations of the labels, obtaining the test statistics, t1, …, tM. • Under H0, t1, …, tM are all generated from the same underlying distribution that generated t. ...

solutions

... Example. We can use your height data to test the hypothesis that the mean height of a male Gonzaga undergraduate is 70 inches (because a web site told me that the mean height of a 20 year old American male is about 70 inches). Formally, we'll test Ho : p = 70 against Hi : p 0 70. We assume that the ...

... Example. We can use your height data to test the hypothesis that the mean height of a male Gonzaga undergraduate is 70 inches (because a web site told me that the mean height of a 20 year old American male is about 70 inches). Formally, we'll test Ho : p = 70 against Hi : p 0 70. We assume that the ...