Kia ora, thanks for your interest in how we calculate an experience's ranking score. It's at the core of Rankers so I'm pleased you're curious.
The ranking score percentage is used to compare and sort experiences in ranking tables. It is not necessarily a direct measurement of the quality of a particular experience as rated by its customers. I've found it a useful tool to allow me to find the best experiences with confidence. But I've also found it important to read the customer reviews before making any final judgements!
We calculate an experience's ranking score using a multi-factor data model instead of a raw data average (mean). This model takes into account several important questions. For instance - is there a trusted body of reviews? What is the age of a review and is the review from a credible source?
Below you'll find details around some of the important factors that went into calculating the ranking score for Sky Tower.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz. We don't believe this is perfect or complete so we're always interested in ways we might make improvements.
Sky Tower
Valid Reviews
191 Valid Reviews
The Sky Tower experience has a total of 191 valid reviews. There are no invalid reviews that are excluded from the calculation. Reviews can be excluded only when a reviewer is not verified or after an investigation by our team determines the reviewer is not genuine.
Below is the distribution of ratings for the 191 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 15 |
|
8% |
| 9/10 | 35 |
|
18% |
| 8/10 | 55 |
|
29% |
| 7/10 | 52 |
|
27% |
| 6/10 | 12 |
|
6% |
| 5/10 | 18 |
|
9% |
| 4/10 | 3 |
|
2% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
75.71% Average
The raw data average (mean) for all the Sky Tower valid reviews is 75.71% and is based on 191 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
Face-to-Face Reviews
176 Face-to-Face Reviews
The Rankers team meets with travellers while they’re in New Zealand and conducts face-to-face surveys. These reviews, in our opinion, are the most trusted in the industry and represent a critical control sample. To our knowledge, we are the only travel review website in the world that has gone to this extent.
More about face-to-face reviews
Within the 191 valid reviews, the experience has 176 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 176 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 13 |
|
7% |
| 9/10 | 32 |
|
18% |
| 8/10 | 51 |
|
29% |
| 7/10 | 51 |
|
29% |
| 6/10 | 11 |
|
6% |
| 5/10 | 16 |
|
9% |
| 4/10 | 1 |
|
1% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
75.91% Average
The raw data average (mean) for all the Sky Tower face-to-face reviews is 75.91% and is based on 176 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
67.94%
Rankers calculates a weighted mean as a base average on which we can improve. Individual review's ratings are given a weight based on several factors. The weight of a review determines the overall impact it'll have on the final weighted average.
Recent reviews have more weight as they are more relevant and reflect the experience as it currently operates. Over time reviews become less relevant and loose their impact on the ranking score.
Low rating reviews carry slightly less weight. This dampens the effect of very low ratings for every experience across the board. This is especially important when the experience has few reviews overall and a single negative rating can grossly mischaracterise an experience. Consistent poor reviews will still result in the experience receiving a comparitively low ranking score.
Credible sources provide reviews that can be trusted. If we have verified a reviewer is genuine via a face-to-face meeting then the review carries additional weight.
| Reviewer | Rating | Age | Relative Weight |
|---|---|---|---|
| Anne N | 4/10 | 425 days | 100% |
| Eric | 5/10 | 2866 days | 4% |
| Martin Fersebner | 7/10 | 2872 days | 5% |
| Alonso | 8/10 | 2928 days | 5% |
| Andres Gonzalez | 6/10 | 2946 days | 4% |
| Eveline | 8/10 | 2959 days | 5% |
| Anna Gruenewald | 5/10 | 2963 days | 4% |
| Camilla Geert | 6/10 | 3175 days | 3% |
| Sabrina Schneider | 8/10 | 3181 days | 4% |
| Laura Cosquer | 7/10 | 3183 days | 4% |
| Frenziska Schmid | 7/10 | 3196 days | 4% |
| Johanna Kuch | 7/10 | 3224 days | 4% |
| Carmen Pramstaller | 9/10 | 3226 days | 4% |
| Liza Braun | 8/10 | 3227 days | 4% |
| Markus Wabing | 8/10 | 3229 days | 4% |
| Uschi Pongratz | 8/10 | 3229 days | 4% |
| Nita Oussoren | 8/10 | 3229 days | 4% |
| Jessica Ruhland | 6/10 | 3229 days | 3% |
| David Soukal | 7/10 | 3230 days | 4% |
| Sabine Bergen | 7/10 | 3237 days | 3% |
| Sophie NIemann | 9/10 | 3242 days | 4% |
| Josephine | 7/10 | 3250 days | 3% |
| Pierre and Alexandra | 7/10 | 3282 days | 3% |
| Selma Krap | 9/10 | 3288 days | 4% |
| Blandine Giusti | 7/10 | 3550 days | 3% |
| Polly Rider | 8/10 | 3655 days | 2% |
| Greg Gilmore | 8/10 | 3888 days | 2% |
| Fiona Hawkins | 7/10 | 3888 days | 1% |
| Pavel Macek | 9/10 | 3897 days | 2% |
| Anna Sternberg | 5/10 | 3927 days | 1% |
| Roy Matthieu | 6/10 | 3937 days | 1% |
| Julie Ledanois | 7/10 | 3937 days | 1% |
| Pierre Gentile | 6/10 | 3937 days | 1% |
| Cindy Benayoum | 7/10 | 3937 days | 1% |
| Olivia | 8/10 | 3938 days | 1% |
| Callum | 7/10 | 3938 days | 1% |
| Sophia | 6/10 | 3943 days | 1% |
| Andreas Zapke | 8/10 | 3982 days | 1% |
| Simone Pickert | 7/10 | 3983 days | 1% |
| Cindy Bonton | 7/10 | 3993 days | 1% |
| Menu | 8/10 | 4281 days | 0% |
| Christian | 5/10 | 4284 days | 0% |
| Nora | 7/10 | 4284 days | 0% |
| Michael Nolan | 10/10 | 4291 days | 0% |
| Sebastian | 8/10 | 4295 days | 0% |
| Tobi | 9/10 | 4296 days | 0% |
| Chantal Mortel | 7/10 | 4296 days | 0% |
| Alessa Ndra | 10/10 | 4301 days | 0% |
| Fabian Brand | 5/10 | 4312 days | 0% |
| Kyle Guffei | 10/10 | 4314 days | 0% |
| Henrik Steinruecken | 8/10 | 4363 days | 0% |
| Doan | 6/10 | 4386 days | 1% |
| Judy | 10/10 | 4390 days | 2% |
| Petra | 7/10 | 4392 days | 2% |
| Selwindt | 9/10 | 4650 days | 2% |
| Mats Harstedt | 7/10 | 4665 days | 2% |
| Mark Bogton | 8/10 | 4665 days | 2% |
| R E Webb | 9/10 | 4668 days | 2% |
| Roland Hofmann | 7/10 | 4671 days | 2% |
| Lepied | 7/10 | 4672 days | 2% |
| Carla Mathieu | 10/10 | 4675 days | 2% |
| Graham Swinyard | 7/10 | 4679 days | 2% |
| Kurt Furuskar | 9/10 | 4696 days | 2% |
| _mel_ | 8/10 | 4716 days | 2% |
| Theresa | 9/10 | 4763 days | 2% |
| Frans van der Kroon | 8/10 | 4764 days | 2% |
| Elke & Charlotte | 8/10 | 4767 days | 2% |
| Gary A | 9/10 | 4777 days | 2% |
| katel86 | 5/10 | 4838 days | 1% |
| Dogoneit | 4/10 | 4991 days | 1% |
| Shoko Watanabe | 8/10 | 4991 days | 2% |
| Markus | 8/10 | 4994 days | 2% |
| Binder | 8/10 | 5006 days | 2% |
| Nicola Thackray | 7/10 | 5009 days | 2% |
| Katy Bourne | 8/10 | 5016 days | 2% |
| Michael Assfalg | 8/10 | 5021 days | 2% |
| Jon_and_Family | 9/10 | 5022 days | 2% |
| M Holierhoek | 7/10 | 5024 days | 2% |
| Berger | 9/10 | 5026 days | 2% |
| Ron Pantzer | 7/10 | 5031 days | 2% |
| Julian Seizinger | 9/10 | 5037 days | 2% |
| Olivia Carvill | 8/10 | 5038 days | 2% |
| Jarob Brezigar | 5/10 | 5043 days | 1% |
| Markus Richert | 6/10 | 5044 days | 1% |
| Christina Fischer | 5/10 | 5045 days | 1% |
| Bruce & Bonnie Childs | 9/10 | 5049 days | 2% |
| hendrik king | 9/10 | 5081 days | 2% |
| craigy | 6/10 | 5234 days | 1% |
| Monica Askew | 9/10 | 5304 days | 2% |
| Adam Gerrard | 8/10 | 5317 days | 2% |
| Sophie & Joffrey | 7/10 | 5321 days | 2% |
| steveE | 7/10 | 5326 days | 2% |
| Alan & Lorna | 8/10 | 5380 days | 2% |
| Mr and Mrs Scott | 5/10 | 5387 days | 1% |
| B Willmore | 10/10 | 5389 days | 2% |
| Pete H | 10/10 | 5396 days | 2% |
| Johan Wisselo | 7/10 | 5407 days | 2% |
| Tanja Titze | 10/10 | 5408 days | 2% |
| Groen | 8/10 | 5412 days | 2% |
| Kasper | 5/10 | 5413 days | 1% |
| Laura Walters | 8/10 | 5414 days | 2% |
| Ines Diana | 8/10 | 5414 days | 2% |
| uleugel | 8/10 | 5424 days | 2% |
| deanlaw | 9/10 | 5460 days | 2% |
| menzel | 8/10 | 5460 days | 2% |
| blokzyl | 7/10 | 5466 days | 2% |
| braunweiler | 9/10 | 5466 days | 2% |
| Marshall | 9/10 | 5479 days | 2% |
| Karin Linder | 9/10 | 5481 days | 2% |
| Lisette X | 7/10 | 5485 days | 2% |
| Louis Duhaime | 8/10 | 5488 days | 2% |
| paulandcathy | 8/10 | 5532 days | 2% |
| clairet | 7/10 | 5586 days | 2% |
| johannac | 7/10 | 5596 days | 2% |
| Miranda | 8/10 | 5599 days | 2% |
| Charles Lyne | 10/10 | 5691 days | 2% |
| Andrew Lonsdale | 5/10 | 5709 days | 1% |
| RubyJ | 8/10 | 5713 days | 2% |
| arthurwa | 10/10 | 5721 days | 2% |
| Peter Jackie | 7/10 | 5724 days | 2% |
| FiensG | 8/10 | 5740 days | 2% |
| Erik | 7/10 | 5743 days | 2% |
| Grimm | 9/10 | 5744 days | 2% |
| Marlena | 10/10 | 5744 days | 2% |
| Nick | 9/10 | 5749 days | 2% |
| RichardE | 9/10 | 5756 days | 2% |
| Sarah | 7/10 | 5757 days | 2% |
| Manfred | 9/10 | 5757 days | 2% |
| Majken | 5/10 | 5764 days | 1% |
| AurelieD | 7/10 | 5768 days | 2% |
| Nanno | 7/10 | 5771 days | 2% |
| MartinD | 7/10 | 5779 days | 2% |
| Danielle | 10/10 | 5785 days | 2% |
| Sonja | 8/10 | 5788 days | 2% |
| Maettu | 8/10 | 5811 days | 2% |
| Stephanie | 9/10 | 5821 days | 2% |
| Katherine | 7/10 | 5825 days | 2% |
| Claire | 7/10 | 5833 days | 2% |
| helen | 8/10 | 5833 days | 2% |
| Maggie | 9/10 | 5839 days | 2% |
| Patricia | 10/10 | 5842 days | 2% |
| Antonella | 9/10 | 5895 days | 2% |
| Gray | 5/10 | 5956 days | 1% |
| Thomas Bachmann | 8/10 | 5969 days | 2% |
| Leanne Priestley | 8/10 | 6092 days | 2% |
| Amy Clark | 7/10 | 6092 days | 2% |
| Toby | 9/10 | 6093 days | 2% |
| Vikki | 10/10 | 6097 days | 2% |
| Ovin | 9/10 | 6097 days | 2% |
| AlanN316 | 9/10 | 6102 days | 2% |
| Yayami Kimura | 9/10 | 6104 days | 2% |
| Demo | 6/10 | 6105 days | 1% |
| RhysP | 8/10 | 6106 days | 2% |
| Sarah Maudsley | 7/10 | 6107 days | 2% |
| Benjamin Krein | 8/10 | 6112 days | 2% |
| Tina Daly | 6/10 | 6113 days | 1% |
| Ohad | 9/10 | 6114 days | 2% |
| Kathy Hawey | 8/10 | 6120 days | 2% |
| David Buckley | 9/10 | 6121 days | 2% |
| Jackie Horwell | 10/10 | 6122 days | 2% |
| Carla | 7/10 | 6133 days | 2% |
| Hanna | 7/10 | 6134 days | 2% |
| Reina Lohaye | 7/10 | 6136 days | 2% |
| Line Oehlinschloger | 5/10 | 6160 days | 1% |
| Tim | 8/10 | 6161 days | 2% |
| Mette de Graap | 7/10 | 6163 days | 2% |
| Andrew Porter | 8/10 | 6169 days | 2% |
| Gerber Liselotte | 9/10 | 6195 days | 2% |
| Samuel Brejeon | 7/10 | 6206 days | 2% |
| Christin | 8/10 | 6211 days | 2% |
| Orla | 3/10 | 6211 days | 1% |
| Pat Brewster | 7/10 | 6323 days | 2% |
| Natalia | 8/10 | 6407 days | 2% |
| Miriam&Eva | 8/10 | 6411 days | 2% |
| Caroline | 8/10 | 6427 days | 2% |
| Klaus | 4/10 | 6428 days | 1% |
| Bonnie | 6/10 | 6431 days | 1% |
| Franklin | 7/10 | 6431 days | 2% |
| Stephanie | 8/10 | 6432 days | 2% |
| andrew julie | 7/10 | 6445 days | 2% |
| Nancy Bill | 7/10 | 6445 days | 2% |
| Daniel | 7/10 | 6447 days | 2% |
| clairekidd | 5/10 | 6450 days | 1% |
| Fred Highsmith | 8/10 | 6451 days | 2% |
| Hannah | 8/10 | 6461 days | 2% |
| Detlef | 5/10 | 6465 days | 1% |
| Delgroot | 8/10 | 6479 days | 2% |
| Herman&Ineke | 5/10 | 6490 days | 1% |
| Janne | 5/10 | 6491 days | 1% |
| Rolf | 9/10 | 6499 days | 2% |
| Nicole | 8/10 | 6499 days | 2% |
Adjustments
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
Sample Size Adjustment
No Adjustment
A reasonable number of reviews are necessary in order for the average to be credible and for an experience to take a prime position within the ranking tables. As such, experiences with only a few reviews have a moderated score. This does not mean that the experience or the reviews can't be trusted. The Sky Tower experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 43 days. However the Sky Tower experience does not meet the criteria for any adjustment.
In addition, an experience's ranking score may be adjusted for each day there is no new ranking. After 1 day the adjustment comes into effect. The maximum number of days that can be adjusted for is 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.
The Sky Tower experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
11.03% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
Final Ranking Score
75%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.