University of California, Los Angeles
Department of Statistics
Statistics C173/C273
Instructor: Nicolas Christou
Introduction
What is geostatistics?
Geostatistics is concerned with estimation and prediction for spatially continuous phenomena, using data
Mathematical Geology, Vol. 17, No. 5, 1985
Fitting Variogram Models by Weighted
Least Squares 1
Noel Cressie 2
The method o f weighted least squares is shown to be an appropriate way o f fitting variogram
models. The weighting scheme automatically gives m
University of California, Los Angeles
Department of Statistics
Statistics C173/C273
Instructor: Nicolas Christou
North Carolina 1974-1978 and 1979-84 SIDS data
Sudden Infant Death Syndrome (SIDS) data are collected for each of the 100 counties of
the stat
University of California, Los Angeles
Department of Statistics
Statistics C173/C273
Instructor: Nicolas Christou
Homework 1
EXERCISE 1
Use R to access the Maas river data. These data contain the concentration of lead and zinc in ppm at 155
locations at th
University of California, Los Angeles
Department of Statistics
Statistics C173/C273
Instructor: Nicolas Christou
Homework 3
Exercise 1:
Use gstat to t a variogram model to the omnidrectional sample variogram of the variable V of the data
below. The variab
University of California, Los Angeles
Department of Statistics
Statistics C173/C273
Instructor: Nicolas Christou
Homework 2
Exercise 1:
Access the following data sets:
a1 <- read.table("http:/www.stat.ucla.edu/~nchristo/statistics_c173_c273/
o3.txt", head
University of California, Los Angeles
Department of Statistics
Statistics C173/C273
Instructor: Nicolas Christou
Homework 6
Exercise 1:
Access the Maas river data at:
a <- read.table("http:/www.stat.ucla.edu/~nchristo/statistics_c173_c273/
soil1.txt", hea
University of California, Los Angeles
Department of Statistics
Statistics C173/C273
Instructor: Nicolas Christou
Homework 4
Exercise 1:
Access the California 2012 Presidential elections results and the results on Proposition 30:
a19 <- read.table("http:/w
University of California, Los Angeles
Department of Statistics
Statistics C173/C273
Instructor: Nicolas Christou
Homework 5
Exercise 1
Access the Maas river data at:
a <- read.table("http:/www.stat.ucla.edu/~nchristo/statistics_c173_c273/
soil.txt", heade