CHAART Data Sources on the Internet. EOSDIS V0 Web Gateway CIESIN Global Change Master Directory JPL AVIRIS Data Facility The anonymous FTP site of the JPL Airborne Visible/Infrared Imaging Spectrometer Data Facility (AVIRIS DF or ADF) can be found here. This site provides several services for AVIRIS investigators and other interested parties. Everything is in the /pub directory, including more documentation. You can view the AVIRIS quicklook files which have all been converted to GIF format, refer to the above "AVIRIS Quicklooks by Year" link for more information.
The README.htm files can be accessed on the Web in the various directories in lieu of the README files. Earth Science Enterprise NOAA-NASA TOVS Pathfinder Path C1 Product MSU Temperatures and Rainfall Visible Earth Visible Earth is NASA's searchable directory of images, visualizations, and animations of the Earth. Distributed Active Archive Centers - DAACs Some of the DAACs are: The Alaska SAR Facililty The EDC DAAC The Goddard DAAC Langley DAAC Products Archived at MSFC:
GIS Coordinator Presentations. World Economic Outlook Database September 2011. The World Economic Outlook (WEO) database contains selected macroeconomic data series from the statistical appendix of the World Economic Outlook report, which presents the IMF staff's analysis and projections of economic developments at the global level, in major country groups and in many individual countries.
The WEO is released in April and September/October each year. Use this database to find data on national accounts, inflation, unemployment rates, balance of payments, fiscal indicators, trade for countries and country groups (aggregates), and commodity prices whose data are reported by the IMF. Data are available from 1980 to the present, and projections are given for the next two years.
Additionally, medium-term projections are available for selected indicators. For some countries, data are incomplete or unavailable for certain years. Changes to the September 2011 Database. Country Profiles - Mexico. The T-Test. The t-test assesses whether the means of two groups are statistically different from each other. This analysis is appropriate whenever you want to compare the means of two groups, and especially appropriate as the analysis for the posttest-only two-group randomized experimental design.
Figure 1 shows the distributions for the treated (blue) and control (green) groups in a study. Actually, the figure shows the idealized distribution – the actual distribution would usually be depicted with a histogram or bar graph. The figure indicates where the control and treatment group means are located. The question the t-test addresses is whether the means are statistically different. What does it mean to say that the averages for two groups are statistically different? Consider the three situations shown in Figure 2. The formula for the t-test is a ratio.
The top part of the formula is easy to compute – just find the difference between the means. SE(XˉT−XˉC)=nTvarT+nCvarC Localisation, Participation and Communication: an Introduction to Good PGIS Practice. An overview of the Spatial Analyst toolbox.