Research Article
A Mathematical Programming Approach to Brand Efficiency of Smartphones in the US Market
Table 5
Annual qualitative analysis of smartphone brands (
smartphone-year observations).
| | Year | Brand | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 | Q8 | Q9 | Q10 |
| | 2013 | Apple | 5.00 | 4.00 | 3.14 | 4.86 | 3.00 | 4.00 | 3.00 | 3.29 | 3.86 | 4.86 | | 2013 | BlackBerry | 3.80 | 4.20 | 3.20 | 4.80 | 2.60 | 3.80 | 3.00 | 2.80 | 2.60 | 4.40 | | 2013 | HTC | 4.50 | 4.70 | 4.40 | 4.50 | 2.90 | 4.00 | 3.00 | 2.70 | 2.60 | 3.50 | | 2013 | LG | 4.80 | 4.80 | 4.60 | 4.40 | 2.40 | 3.80 | 3.00 | 2.80 | 2.00 | 4.00 | | 2013 | Motorola | 4.80 | 4.80 | 4.60 | 3.80 | 3.00 | 4.00 | 3.60 | 3.80 | 2.60 | 3.60 | | 2013 | Nokia | 4.00 | 5.00 | 5.00 | 5.00 | 3.00 | 4.00 | 3.00 | 2.00 | 3.00 | 3.00 | | 2013 | Samsung | 4.84 | 4.79 | 4.79 | 4.63 | 2.79 | 4.32 | 3.05 | 3.37 | 2.53 | 3.79 | | 2013 | Sony | 4.00 | 4.00 | 4.00 | 4.50 | 2.50 | 4.00 | 3.50 | 3.50 | 2.50 | 3.50 | | Mean | 4.47 | 4.54 | 4.22 | 4.56 | 2.77 | 3.99 | 3.14 | 3.03 | 2.71 | 3.83 |
| | 2014 | Apple | 5.00 | 4.00 | 4.00 | 5.00 | 3.00 | 4.00 | 3.00 | 4.20 | 4.00 | 5.00 | | 2014 | BlackBerry | 4.38 | 4.50 | 4.25 | 4.63 | 2.63 | 4.00 | 3.88 | 3.63 | 2.88 | 4.13 | | 2014 | HTC | 4.82 | 4.91 | 5.00 | 4.91 | 2.64 | 4.00 | 4.09 | 3.18 | 2.73 | 4.00 | | 2014 | LG | 4.90 | 4.80 | 4.70 | 4.80 | 2.80 | 3.70 | 3.90 | 3.20 | 2.30 | 3.90 | | 2014 | Motorola | 5.00 | 5.00 | 5.00 | 4.80 | 3.00 | 4.00 | 3.60 | 4.00 | 3.00 | 3.80 | | 2014 | Nokia | 4.83 | 5.00 | 5.00 | 5.00 | 3.00 | 4.00 | 4.00 | 4.00 | 2.67 | 3.50 | | 2014 | Samsung | 4.95 | 4.84 | 5.00 | 4.79 | 2.84 | 4.37 | 3.95 | 4.11 | 3.00 | 3.58 | | 2014 | Sony | 5.00 | 5.00 | 5.00 | 5.00 | 3.00 | 4.00 | 4.00 | 4.00 | 3.00 | 4.00 | | Mean | 4.86 | 4.76 | 4.74 | 4.87 | 2.86 | 4.01 | 3.80 | 3.79 | 2.95 | 3.99 |
| | 2015 | Apple | 5.00 | 4.00 | 3.89 | 5.00 | 3.00 | 4.00 | 3.00 | 3.89 | 4.00 | 5.00 | | 2015 | BlackBerry | 4.00 | 4.43 | 4.00 | 4.57 | 2.71 | 3.86 | 3.86 | 3.57 | 2.86 | 4.00 | | 2015 | HTC | 4.70 | 4.70 | 4.70 | 4.90 | 2.40 | 3.90 | 3.60 | 2.90 | 3.00 | 3.80 | | 2015 | LG | 4.73 | 4.87 | 4.67 | 4.20 | 2.87 | 4.07 | 4.27 | 3.33 | 2.87 | 3.47 | | 2015 | Motorola | 5.00 | 4.33 | 4.83 | 4.17 | 2.83 | 4.17 | 3.83 | 3.00 | 3.00 | 4.17 | | 2015 | Nokia | 4.57 | 4.29 | 4.43 | 4.71 | 3.00 | 3.71 | 3.29 | 3.29 | 3.00 | 3.43 | | 2015 | Samsung | 4.67 | 4.71 | 4.76 | 4.62 | 2.81 | 4.14 | 4.24 | 3.62 | 3.38 | 3.52 | | 2015 | Sony | 4.00 | 5.00 | 5.00 | 5.00 | 3.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | | Mean | 4.58 | 4.54 | 4.53 | 4.65 | 2.83 | 3.98 | 3.76 | 3.45 | 3.26 | 3.92 |
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Note. Q1 = ease of use, Q2 = messaging, Q3 = Web browsing, Q4 = display quality, Q5 = voice quality, Q6 = phoning, Q7 = battery life, Q8 = camera image quality, Q9 = camera video quality, and Q10 = portability.
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