Pol 600: Research Methods
... several measures of central tendency, each with different pros and cons: expected values (sometimes called expectations, means or averages), medians, and modes. Expected values (usually denoted as E (X) or x̄) are most commonly used in practice, but there are applications where medians (denoted x̃) ...
... several measures of central tendency, each with different pros and cons: expected values (sometimes called expectations, means or averages), medians, and modes. Expected values (usually denoted as E (X) or x̄) are most commonly used in practice, but there are applications where medians (denoted x̃) ...
Document
... if and only if for any other statistics Y2=u2(X1,…Xn), … , Yn=un(X1,…Xn) the conditional pdf h(y2,…,yn | y1 ) of Y2,…,Yn given Y1=y1 does not depend upon no matter what the value of y1 is. So given that we know Y1=y1 , it isn’t possible to use any other statistic Y2 to make any inference about . ...
... if and only if for any other statistics Y2=u2(X1,…Xn), … , Yn=un(X1,…Xn) the conditional pdf h(y2,…,yn | y1 ) of Y2,…,Yn given Y1=y1 does not depend upon no matter what the value of y1 is. So given that we know Y1=y1 , it isn’t possible to use any other statistic Y2 to make any inference about . ...
How do we choose which measures of center and spread to use
... Group data like histograms Still have original values (unlike histograms) Two columns. Left column: Stem Right column: Leaf (includes only the final digit) ...
... Group data like histograms Still have original values (unlike histograms) Two columns. Left column: Stem Right column: Leaf (includes only the final digit) ...
class notes - rivier.instructure.com.
... (symbol P may also be used to represent personal totals) ...
... (symbol P may also be used to represent personal totals) ...
economic freedom leads
... 60% of the variability in logged per capita GDP, a reasonably large amount. Once again the intercept is meaningless, but what about the slope? The slope coefficient is −.764; this says that a one-unit increase in the economic freedom index is associated with an expected .764 unit decrease in the log ...
... 60% of the variability in logged per capita GDP, a reasonably large amount. Once again the intercept is meaningless, but what about the slope? The slope coefficient is −.764; this says that a one-unit increase in the economic freedom index is associated with an expected .764 unit decrease in the log ...
Kleinbaum, D.G. and S. John; (1969)A central tolerance region for the multivariate normal distribution, II."
... n X. 2p (l-a)/tp (Q))~ +{N(n-p+l)}-:t (np)"r{Fp,n-p+l(l-Q)}~ ...
... n X. 2p (l-a)/tp (Q))~ +{N(n-p+l)}-:t (np)"r{Fp,n-p+l(l-Q)}~ ...
Chapter 24 - TeacherWeb
... 1. Independence Assumption: the data in each group must be drawn independently. A) Randomization condition: Data must arise from a random sample. B) 10% condition: The sample is less than 10% of the population. 2. Normal Population Assumption: the underlying populations are each Normally distributed ...
... 1. Independence Assumption: the data in each group must be drawn independently. A) Randomization condition: Data must arise from a random sample. B) 10% condition: The sample is less than 10% of the population. 2. Normal Population Assumption: the underlying populations are each Normally distributed ...
View/Open
... mean but a standard deviation 50% smaller than the standard deviation under the mediumvariance scenario. Analogously, the distribution of e~y under the high-variance scenario is ey,q, with probabilities π y,H q ≡ π(q + 0.5; φ1H , φ2H ) − π(q − 0.5; φ1H , φ2H ) for [ φ1H , φ2H ] = [0.93, 1.73]. Note ...
... mean but a standard deviation 50% smaller than the standard deviation under the mediumvariance scenario. Analogously, the distribution of e~y under the high-variance scenario is ey,q, with probabilities π y,H q ≡ π(q + 0.5; φ1H , φ2H ) − π(q − 0.5; φ1H , φ2H ) for [ φ1H , φ2H ] = [0.93, 1.73]. Note ...
