4 Types of Analytics
Analysis has been the hot cake in the room. Every second person is either
speaking about analysis or reading about it. It may be inquisitive for the naïve
learners what is it all about Analytics, and what can be done by it. In broad
terms, Data analytics has been divided into four types.
1. Descriptive – What is happening now?
2.
Diagnostic
– What happened and why?
3.
Predictive
– What might happen?
4.
Prescriptive – What actions should be taken?
Source : https://www.kdnuggets.com/images/principa-4-types-of-data-analytics.png
1.
Descriptive
Analysis
Descriptive
Analysis provides the analyst with a view of key metrics and measures
within the company. It answers the question of what happened. For instance, a
healthcare provider will learn how many patients were hospitalized last month;
a retailer – the average weekly sales volume; a manufacturer – a rate of the
products returned for a past month, etc.
Descriptive analytics juggles raw data from multiple data sources to
give valuable insights into the past. However, these findings simply signal
that something is wrong or right, without explaining why. For this reason,
highly data-driven companies do not content themselves with descriptive
analytics only, and prefer combining it with other types of data analytics.
2.
Diagnostic
Analytics
On the assessment of the
descriptive data, diagnostic analytical tools will empower an analyst to drill
down and in so doing isolate the root-cause of a problem. It allows to drill down, to find out dependencies
and to identify patterns
Let’s look at the examples from different
industries: a healthcare provider compares patients’ response to a promotional
campaign in different regions; a retailer drills the sales down to
subcategories.
3.
Predictive
Analytics
Whether it’s the likelihood
of an event happening in future, forecasting a quantifiable amount or
estimating a point in time at which something might happen - these are all done
through predictive models. It uses the findings of descriptive and
diagnostic analytics to detect tendencies, clusters and exceptions, and to
predict future trends, which makes it a valuable tool for forecasting. Its
accuracy highly depends on data quality and stability of the situation, so it requires
a careful treatment and continuous optimization.
The variability of the
component data will have a relationship with what it is likely to predict (e.g.
the older a person, the more susceptible they are to a heart-attack – we would
say that age has a linear correlation with heart-attack risk). These data are
then compiled together into a score or prediction.
4.
Prescriptive Analytics
The purpose of prescriptive analytics is to
literally prescribe what action to take to eliminate a future problem or take full advantage of
a promising trend. Prescriptive analytics uses sophisticated tools and
technologies, like machine learning, business rules and algorithms, which makes
it sophisticated to implement and manage.
The prescriptive model utilizes an
understanding of what has happened, why it has happened and a variety of
“what-might-happen” analysis to help the user determine the best course of
action to take. An excellent example of this is a traffic application helping
you choose the best route home and taking into account the distance of each
route, the speed at which one can travel on each road and, crucially, the
current traffic constraints. A prescriptive analysis is typically not just with
one individual response but is, in fact, a host of other actions.
Few areas of implications are
mentioned below:
Descriptive
Analysis:
· pattern
of students who failed the examination
· causes
of deaths of soldiers
Diagnostic
Analysis:
· reason
for high hospital admissions
· impact
of fuel price on vegetable price
Predictive
Analysis:
· how
long will the employee stay in the company
· amount
of sales next year
Prescriptive
Analysis
· allocation
of resources for optimum utilization
· allocate
the vehicle to route for employee pickup and drop
Source:
https://www.scnsoft.com/blog-pictures/business-intelligence/4_types_of_data_analytics-01_1.png
REFERENCE
https://insights.principa.co.za/4-types-of-data-analytics-descriptive-diagnostic-predictive-prescriptive
https://www.kdnuggets.com/2017/08/top-stories-2017-jul.html
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