Brand types | Number of observations | Mean RIP | SD | Min | Max |
Low price | |||||
2009 | 93 | 6.61 | 3.19 | 0.46 | 14.84 |
2010 | 57 | 6.57 | 3.89 | 0.60 | 16.54 |
2011–2012 | 452 | 8.29 | 3.00 | 0.34 | 14.84 |
2014–2015 | 279 | 8.58 | 3.17 | 0.43 | 18.79 |
Medium price | |||||
2009 | 1198 | 15.07 | 6.90 | 3.07 | 42.41 |
2010 | 1108 | 14.34 | 7.43 | 2.84 | 38.91 |
2011–2012 | 619 | 15.45 | 6.80 | 3.42 | 44.51 |
2014–2015 | 841 | 12.94 | 6.80 | 3.90 | 42.28 |
High price | |||||
2009 | 263 | 26.09 | 11.75 | 8.61 | 84.81 |
2010 | 306 | 21.52 | 9.60 | 8.22 | 58.36 |
2011–2012 | 221 | 22.81 | 9.93 | 9.58 | 59.34 |
2014–2015 | 190 | 22.16 | 9.91 | 10.84 | 70.45 |
Premium | |||||
2009 | 138 | 32.05 | 18.83 | 15.50 | 95.43 |
2010 | 138 | 28.48 | 15.69 | 14.85 | 64.98 |
2011–2012 | 103 | 37.44 | 23.02 | 17.11 | 93.20 |
2014–2015 | 137 | 27.32 | 10.16 | 20.05 | 73.77 |
All brands | |||||
2009 | 1692 | 16.36 | 9.60 | 0.46 | 95.43 |
2010 | 1609 | 15.51 | 9.07 | 0.60 | 64.98 |
2011–2012 | 1395 | 14.47 | 10.55 | 0.34 | 93.20 |
2014–2015 | 1447 | 13.62 | 8.53 | 0.43 | 73.77 |