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What are Data Analysis Software? Data Analysis Software tool that has the statistical and analytical capability of inspecting, cleaning, transforming, and modelling data with an aim of deriving important information for decision-making purposes. The software allows one to explore the available data, understand and analyze complex relationships. DIAdem is application software that helps engineers accelerate post-processing of measurement data. It is optimized for large data sets and includes tools to quickly aggregate and search for the data you need, view and investigate that data, transform it with engineering-specific analysis functions and share results with a powerful drag-and-drop report editor. Statcato is a free, portable, java based statistical analysis software for Windows. In this software, you can find out various statistics, plot graphs to visualize the relationship between variables, evaluate mathematical functions, calculate probability distribution, p-values, etc. In this software, you can enter data in the Data window that has a spreadsheet-like interface and perform all.
DEVELOPER :Hydrologic Engineering Center
PLATFORM :Windows
LICENSE :GNU General Public License
U.S. Army Corps of Engineers Statistical Software Package (HEC-SSP) developed by the Hydrologic Engineering Center. This software allows you to perform statistical analyses of hydrologic data. The current version of HEC-SSP can perform flood flow frequency analysis based on Bulletin 17B, 'Guidelines for Determining Flood Flow Frequency' (1982), a generalized frequency analysis on not only flow data but other hydrologic data as well, a volume frequency analysis on high and low flows, a duration analysis, a coincident frequency analysis, and a curve combination analysis.
Statistical Analysis Components
Flow Frequency Analysis (Bulletin 17B) – This component of the software allows the user to perform annual peak flow frequency analyses. The software implements procedures in Bulletin 17B, 'Guidelines for Determining Flood Flow Frequency', by the Interagency Advisory Committee on Water Data.
General Frequency Analysis – This component of the software allows the user to perform annual peak flow frequency analyses by various methods. Additionally the user can perform frequency analysis of variables other than peak flows, such as stage and precipitation data.
Volume Frequency Analysis – This component of the software allows the user to perform a volume frequency analyses on daily flow or stage data.
Duration Analysis – This component of the software allows the user to perform a duration analysis on any type of data recorded at regular intervals. The duration analysis can be used to show the percent of time that a hydrologic variable is likely to equal or exceed some specific value of interest.
Coincident Frequency Analysis – This component of the software assists the user in computing the exceedance frequency relationship for a variable that is a function of two other variables.
Curve Combination Analysis – This component provides a tool for combining frequency curves from multiple sources into one frequency curve.
* HEC-SSP download link provides gnu general public license version of the software for Windows 64 bit and Windows 32 bit.
HEC-HMSVersion:4.3 · Hydrologic Engineering Center
The Hydrologic Modeling System (HEC-HMS) is designed to simulate the complete hydrologic processes of dendritic watershed systems.
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HEC-ResSimVersion:3.1 · Hydrologic Engineering Center
The Reservoir System Simulation (HEC-ResSim) software is used to model reservoir operations at one or more reservoirs for a variety of operational goals and constraints.
HEC-EFMVersion:4.0 · Hydrologic Engineering Center
The Ecosystem Functions Model (HEC-EFM) is designed to help study teams determine ecosystem responses to changes in the flow regime of a river or connected wetland.
HEC-ResPRMVersion:1.0 · Hydrologic Engineering Center
HEC-ResPRM is a reservoir system operations optimization software package developed to assist planners, operators, and managers with reservoir operation planning and decision-making.
HEC-FIAVersion:2.2 · Hydrologic Engineering Center
The HEC-FIA Flood Impact Analysis software package analyzes the consequences from a flood event.
HEC-RASVersion:5.0.7 · Hydrologic Engineering Center
HEC-RAS is designed to perform one-dimensional hydraulic calculations for a full network of natural and constructed channels.
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The standard deviation, SD is most widely used measure of dispersion around Mean. It indicates the slope of distributed curve on either side of the mean. According to the nature of dispersal of data, slope could be either gentle or steep. A high SD indicates gentle slope, widely scattered around mean and higher range; while, converse is true, when SD is less. Based on this description, it can be presumed that first set of data will have smaller SD than that of the second set. A normally distributed curve slopes alike on either side of the mean as shown here. This aside, for normally distributed data, mean, median and mode, all coincide.
The variance of a set of data is the average of the square of the difference in value of a datum from the mean:
This has the disadvantage of being measured in the square of the units of the data. The standard deviation is the square root of the variance:
This formula with denominator 'n' indicates SD of entire population. However, for all practical purposes, we deal with 'samples' only, and in such case, denominator 'n' is replaced by (n-1) to account for limited length of data. Excel formula to estimate this parameter is =stdev(Range of data). Here, for two sets of data, SD computed is 1.58 & 21 respectively, which is consistent with our presumption made earlier.