Applications of Statistical Analyses on Water Quality data and its recent research trends - Statswork
                     APPLICATIONS OF  
STATISTICAL 
ANALYSES  ON WATER 
QUALITY  DATA AND 
ITS RECENT  
RESEARCH TRENDS
An Academic presentation by
Dr. Nancy Agnes, Head, Technical Operations, 
Statswork  Group www.statswork.com
Email: [email protected]
TODAY'S DISCUSSION
Outline
Introduction
Statistical 
Techniques  Future 
Scope
INTRODUCTION
Analysing water quality data entails reviewing and  
assessing the data to see if any errors were made  
during the sampling or analysis of the water quality  
sample or data entry.
To detect any issues regarding data, a series of data  
checks should be performed.
It includes data checking in the first stage, i.e. data 
 entry, whether the data is within the range of  
parameters, data is within the detection limits, etc.
However, there are different aspects of water quality, and the techniques suitable for 
 each field are tabulated in the following subsection.
One way to analyse the water quality data is using graphical techniques.
The benefits of graphical representation of data include finding the data
trend,  finding outliers in the data, etc.
STATISTICAL The common statistical analysis or techniques
to  handle water quality data is as follows:
 
TECHN IQUES
Contd...
1.TREND ANALYSIS
It acts as an important factor for water quality analysis since it helps the researcher 
 understand the data's variability.
Wang et al. (2020) proposed an innovative trend analysis to detect or identify
the  annual and seasonal rainfall pattern.
Data collection from different meteorological stations and compare the
proposed  method with Theil-Sen trend method Mann-Kendall test.
The result revealed a strong trend associated with flood and drought during extreme 
 rainfall.
Contd...
These methods' validity showed that the proposed method detects the
seasonal  trend accurately than using the other two test methods.
Our Data collection service help in collect clean data and maximize your impact.
Contd...
Contd...
2. CORRELATION
Correlation is basically to identify the relationship between two or more
variables. It  helps to identify the variables which control the variability in water 
quality data.
For example, consider a study on water flowing quality on land, i.e. water quality in the 
 rivers.
One can take different research problem based on the river data.
However, suppose our interest is to find the seasonality of water quality in
selected  areas and the land usage.
The correlation matrix will look like the following table 1. Contd...
Table 1: Sample Correlation 
Matrix
3. REGRESSION ANALYSIS
Regression analysis helps find the average relationship between the variables and is 
 useful to predict future outcomes.
Contd...
4.  AUTOCORRELATION ANALYSIS
Ifwewanttounderstandtherelationshipbetweentwoormoresimilarattributes  measured at 
different time points, then autocorrelation analysis can be used.
5. TESTING STATISTICAL HYPOTHESIS
6. STATISTICAL MODELLING
It is used to identify the behavior and predict future outcomes through a mathematical 
 formulation.
Contd...
7. CONTROL CHARTS
It is used to monitor the process and detect the data variability using control limits.
The most popular is the mean chart and range chart.
If any data points are scattered away from the limits, they can be considered defective 
 and treated as an outlier(s).
However, selecting a suitable statistical analysis or water quality analysis technique 
 depends on the data and the research question.
The choice of suitable analytical technique is based on detection limits, i.e.
Contd...
range of concentration of the chemical component in the water, how much accuracy 
 and precision are needed for the research problem.
The most important is the sampling strategy.
Statswork provide suitable online statistical analysis service to get high quality data.
FUTURE SCOPE
There are numerous statistical procedures or  
techniques to analyse the water quality data.
Since water scarcity is increasing due to lack of rainfall  
in many regions, finding the water quality for the  
recycled water, research related to turning the hard  
water to soft water, etc. are considered future research  
scope.
Contact Us
UNITED KINGDOM
+44-1143520021
INDIA
+91-4448137070
EMAIL
[email protected]