Six sigma in it projects

Six Sigma in IT Projects...?

Marta OwczarczakJakub Bryl

Introduction

Six Sigma as a philosophy

Six Sigma and statistical roots

Six Sigma in IT projects

Summing-up

Six Sigma as a philosophy

Ideology

Approach

Philosophy

Methodology

Six Sigma is a defect reduction methodology that transforms organizations by forcing them to focus on the quality of the customer experience

Quality assurance, production quality management, management of quality

Six Sigma and statistical roots

Gaining the 99% of effectiveness is a great result!!

Is it?

Aircraft, automotive branch,

pharmaceutical companies, hospitals….

Six Sigma aspire to assure almost 100% certainty that what have been planned – will

be done.

Six Sigma and statistical roots

The term sigma refers to deviations from an ideal level of operation, where each level of sigma, starting from one, allows for fewer defects.

Mean (arithmetic mean)

• Is a method to derive the central tendency of a sample space.

• Is the arithmetic average of a set of values.

Standard deviation (σ)

• Standard deviation is a widely used measure of the variability or dispersion.

• It shows how much variation there is from the "average" (mean, or expected value) and how many of the results fit within the tolerance limits.

Six Sigma and statistical roots

Six Sigma and statistical roots

• „high quality” or „no surprises”?

Six Sigma and statistical roots

One defective nail per 100 produced 50 defective CPUs per 100 produced.

PPM – parts per million

DPMO – defect s per million opportunities

Six Sigma and statistical rootsHow do we count this?

•Liczba wykrytych niezgodności D = 61

•Liczba sprawdzonych jednostek U = 909

•Liczba możliwości braków na jednostkę wyrobu O = 7

•Całkowita liczba możliwych braków TOP = 6363

•Liczba braków na jednostkę DPU = D/U = 0,0671

•Liczba braków na możliwość DPO = DPU/O = 0,0096

•Liczba braków na milion możliwości DPMO=DPO x 1000000

DPMO = 9600

• Z1 = 2,34 + 1,5 = 3,84

Six Sigma and statistical rootsReal - world Performance Level

Six Sigma methodologyin IT projects

„ If you cannot represent in numbers this, what you want to say, probably you don’t have an idea what are you talking about”

Set of tools:

-Graphic tools to analyse and represent data;

-Statistical tools to analyse data

-Tools for generating solutions

Six Sigma in IT projects

"Six Sigma gives us a very precise way to demonstrate the real value of technology, and it helps us improve the way we deliver that value.“

• is not about widgets; the focus is on processes (despite its origin in manufacturing);

•aims to measure and improve both internal processes, such as network speed and reliability, and line-of-business processes in which IT has a role, such as how well an online ordering system is working;

•has given us a good toolset that we can use consistently and repeatedly to analyze how we have things set up and running.

Six Sigma in IT projects

"IT is a big user of processes: testing and hardware implementation and software development„

Doug Debrecht, vice president and CIO at Raytheon Aircraft

One Six Sigma team at Raytheon, for example, was charged with analyzing why the division had what Debrecht admits was "an ungodly number" of servers 350.

The Six Sigma team determined the root cause of the problem, that each application got its own server, regardless of its size or bandwidth requirements. And then worked out the specifics to allow applications to share servers logically and securely.

The result: a 40 percent consolidation in servers, with the attendant time and labor savings added back to the bottom line.

Six Sigma in IT projects

Best practices for success from Six Sigma in IT.

1.Pick the right people

2.Don’t substitute Six Sigma for thinking.

3.Don’t be afraid to tinker.

4.Don’t get bogged down in numbers.

Six Sigma in IT projectsReal numbers

Histogram

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Histogram

0

5

10

15

20

25

0-1

0

11-2

0

21-3

0

31-4

0

41-5

0

51-6

0

61-7

0

71-8

0

81-9

0

91-1

00

101-1

10

111-1

20

121-1

30

131-1

40

141-1

50

czas [h]

ilość tasków

Six Sigma in IT projectsReal numbers

Pareto Diagram

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Six Sigma in IT projectsReal numbers

BOXPLOT

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Summary

• Successful implementation in big corporations like GE, Motorola;

• Control and support form the highest managment;

• Six Sigma triumphs, bilions of dollars of profits;

• Is it posible to implement everywhere?

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