Statistics in geophysics descriptive statistics

Statistics in geophysics descriptive statistics II

Statistics in geophysics descriptive statistics II

... −1 ≤ rSP ≤ Interpretation: rSP > 0: Y tends to increase when X increases rSP < 0: Y tends to decrease when X increases rSP = 0: No tendency for Y to either increase or decrease when X increases ... modified version The following quantities (called fences) can be used for identifying extreme values in the tails of the distribution: lower inner fence: x0.25 − 1.5 × IQR; upper inner fence: x0....

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Statistics in geophysics descriptive statistics

Statistics in geophysics descriptive statistics

... statistical ideas is in making sense of a set of data The goal is to extract insights about the processes underlying the generation of the numbers Descriptive statistics is the discipline of quantitatively ... finite or countable set of different values continuous: uncountable set of different values quasi-continuous: data are continuous but measured in a discrete way Winter Term 2013...

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Statistics in geophysics generalized linear regression

Statistics in geophysics generalized linear regression

... Generalized linear models Binary regression Count data regression Components of the classical linear model Generalized linear models (GLMs) are an extension of classical linear models ... substituted into the respective model and the total number of parameters should be increased to p + Winter Term 2013/14 13/25 Generalized linear models Binary regression Count data reg...

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Statistics in geophysics inferential statistics II

Statistics in geophysics inferential statistics II

... distribution-free) tests Winter Term 2013/14 2/27 Introduction to hypothesis testing Some commonly encountered parametric tests Sampling distribution The sampling distribution for a statistic (including the test ... it justify questioning, the claim? This problem fits neatly into the parametric setting of the binomial distribution Winter Term 2013/14 11/27 Introduction to hypothesis testing S...

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Statistics in geophysics inferential statistics III

Statistics in geophysics inferential statistics III

... Paired samples Two independent samples Background Tests not requiring assumptions involving specific parametric distributions for the data or for the sampling distribution of the test statistics are ... X1 , , Xn , Y1 , , Ym in ascending order Define Vi = if the i-th order statistic belongs to the X sample if the i-th order statistic belongs to the Y sample Winter Term 2013/14 9/10 Nonpar...

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Statistics in geophysics inferential statistics

Statistics in geophysics inferential statistics

... defined by summing the arguments and then dividing by n Winter Term 2013/14 3/26 Estimation by Maximum Likelihood Properties of Estimators Confidence Intervals Background In 1921, R A Fisher pointed ... parameters Winter Term 2013/14 12/26 Estimation by Maximum Likelihood Properties of Estimators Confidence Intervals Evaluating estimators We have outlined reasonable techniques for finding o...

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Statistics in geophysics introduction and probability theory

Statistics in geophysics introduction and probability theory

... 1000 1500 Days since January 1st, 2002 Winter Term 2013/14 7/32 2000 Introduction Probability Theory Course outline Probability Theory Descriptive Statistics Inferential Statistics Linear Regression ... 27/32 Introduction Probability Theory Set theory The meaning of probability Some properties of the probability function Multiplicative law of probability and inde...

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Statistics in geophysics linear regression II

Statistics in geophysics linear regression II

... nonlinear relationships between continuous covariates and the response within the scope of linear models Two simple methods for dealing with nonlinearity: Variable transformation; Polynomial regression ... 13.8 25 W Turkey weights in pounds, ages in weeks, and origin (Georgia (G); Virgina (V); Wisconsin (W)), of 13 Thanksgiving turkeys Winter Term 2013/14 6/28 Multiple linear regre...

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Statistics in geophysics linear regression

Statistics in geophysics linear regression

... mid-parental height against child’s height, and regression line (dark red line) Winter Term 2013/14 3/24 Setting the scene Fitting a straight line by least squares The analysis of variance Interval estimation ... (multiple) linear regression one (two or more) predictor variable(s) is (are) assumed to affect the values of a response variable in a linear fashion For the model of simpl...

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Statistics in geophysics principal component analysis

Statistics in geophysics principal component analysis

... eigenvectors of ω1 , , ωr Winter Term 2013/14 8/24 Preliminaries Methodology Software Applications The aim of principal component analysis I Principal component analysis (PCA) provides a computationally ... loadings by optimizing a certain “simplicity” criterion The method of rotation emerged in Factor Analysis and was motivated both by solving the rotational indeterminacy pro...

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Statistics in geophysics probability theory II

Statistics in geophysics probability theory II

... heads obtained in the three tosses ω X (ω) HHH HHT HTH THH TTH THT HTT TTT Table: Enumeration of the value of X for each point in the sample space x P(X = x) 1/8 3/8 3/8 1/8 Table: Induced probability ... distribution describes the number of events occurring in a certain time interval and so pertains to data on counts A random variable X is defined to have a Poisson distribution, deno...

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ADVANCES IN GEOPHYSICS docx

ADVANCES IN GEOPHYSICS docx

... large earthquakes in the near future This information is extremely important for seismic and tsunami hazard planning, such as developing building codes in Alaska and managing land in coastal areas ... Jackknifing is a resampling technique designed to avoid the problems inherent in determining the errors from the least squares method In jackknifing, a fixed number j of random data po...

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Chaos and structures in geophysics and astrophysics   provenzale & balmforth

Chaos and structures in geophysics and astrophysics provenzale & balmforth

... ệ ééí ễ ề ì ểề ỉ ẹ ề ẹ ềì ểề ì ì ề ệ ì ể ệá ểệ ẳ ẳ Correlation Dimension WHITE NOISE CHAOS Embedding Dimension ệ ẵ ô ệ ềỉ ểệ ể ỉ ểệệ é ỉ ểề ẹ ềì ểề ểệ ểì ề ỉ ềể ì ìíìỉ ẹì ểẹ ề ỉ í ề ỉỉệ ... ỉ ééể ì ỉể ệ ể ề ị ìểẹ ể ỉ ì éì ễểì ỉ ệ ìéỉì ậểẹ ể ỉ ì ẹ ỉ ể ì ệ ì ệ éể ẵ (a) linear stochastic process (b) nonlinear stochastic process Signal Signal 2 20 40 Time, t 60 (c) 10 60 (e) 10 10 Frequency ......

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Báo cáo khoa học: "A 15-year survey of reproductive efficiency of Standardbred and Finnhorse trotters in Finland descriptive results." pptx

Báo cáo khoa học: "A 15-year survey of reproductive efficiency of Standardbred and Finnhorse trotters in Finland descriptive results." pptx

... article as: Katila et al., A 15-year survey of reproductive efficiency of Standardbred and Finnhorse trotters in Finland - descriptive results Acta Veterinaria Scandinavica 2010, 52:40 ... veterinary care and reluctance of owners to invest money in the treatments In the intensive and professional TB industry, veterinarians are an integral part of the busi...

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