Step 1- Problem or Opportunity Statement
What do you think about cellphone? Yes, telecommunication device that almost every person on earth has. And there’s a proverb: Leaving home without my phone almost feels like leaving the house naked.
Currently my cellphone is HTC sensation. I want to upgrade it with a better one, because my cellphone’s performance is getting slower after 2.5 years of use. In this case I will use Multi Attribute Decision Making Method.
Step 2 – “FEASIBLE alternatives”
I saw in the market and searched the specification and feature that I need, not what I want. These are my cellphone candidates:
From left to right: Blackberry Q10, HTC One, Apple iPhone 5, Sony Experia Z.
Step 3- Develop the outcomes for each alternative (minimum 2)
Each cellphone’s features are listed below to make it easier to compare:
Step 4- Selection of the acceptable criteria.
By comparing the result, we will find out which model will be a better one. I use non-dimensional scaling method. These phone’s feature are qualitative. Then they’re transformed into quantitative non dimensional value and I will seek for the biggest score.
Step 5- Analysis/ Comparison of the Alternatives against the Criteria
Table below shown the sum of each criteria’s scores:
Sony Experia Z scored (0.7), followed by iPhone 5 (0.47), Blackberry Q10 (0.37) and HTC One (0.34). Sony has the highest score, because it has the lowest price among the other 3, and has good feature. It has advantages which I wanted.
Step 6- Selection of the Best/ Preferred Alternative Compared against the Criteria
From the criteria, I shall choose Sony Experia Z for my next cellphone. The score also significantly higher than the others.
Step 7- Performance Monitoring and Post Evaluation of Result/ Follow up Assessment
As long as I rank the attributes of features in such way I did in this calculation, Sony Experia will be the best choice. The choice might be different if I ranked (for the example) Gorilla glass or slightest weight as the most important.
Also, I need to browse satisfactory survey of Sony Experia Z’s users. If users are happy, probably I’ll be happy too 😀
Sullivan, W. G., Wicks, E. M., & Koelling, C. P. (2012). Chapter 2 Cost Concept and Design Economics. In Engineering Economy (15th ed., . Chapter 14 Pp. 551 – 573). Upper Saddle River, N.J: Prentice Hall.
Westney, Ricahrd E, (1997). The Engineer Cost Handbook. 1st ed. New York: Marcel Dekker,Inc..
GSM Arena staff (2013). Blackberry Q10. [ONLINE] Available at: http://www.gsmarena.com/blackberry_q10-5274.php. [Last Accessed 28 September 2013].
GSM Arena Staff (2013). Apple Iphone 5. [ONLINE] Available at: http://www.gsmarena.com/apple_iphone_5-4910.php. [Last Accessed 28 September 2013].
GSM Arena staff (2013). HTC One. [ONLINE] Available at: http://www.gsmarena.com/htc_one-5313.php. [Last Accessed 28 September 2013].
GSM Arena staff (2013). Sony Experia Z. [ONLINE] Available at: http://www.gsmarena.com/sony_xperia_z-5204.php. [Last Accessed 28 September 2013].