Hi, 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
67.82%
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 | 410 days | 100% |
| Eric | 5/10 | 2851 days | 4% |
| Martin Fersebner | 7/10 | 2857 days | 5% |
| Alonso | 8/10 | 2913 days | 5% |
| Andres Gonzalez | 6/10 | 2931 days | 4% |
| Eveline | 8/10 | 2944 days | 5% |
| Anna Gruenewald | 5/10 | 2948 days | 4% |
| Camilla Geert | 6/10 | 3160 days | 3% |
| Sabrina Schneider | 8/10 | 3166 days | 4% |
| Laura Cosquer | 7/10 | 3168 days | 4% |
| Frenziska Schmid | 7/10 | 3181 days | 4% |
| Johanna Kuch | 7/10 | 3209 days | 4% |
| Carmen Pramstaller | 9/10 | 3211 days | 4% |
| Liza Braun | 8/10 | 3212 days | 4% |
| Markus Wabing | 8/10 | 3214 days | 4% |
| Uschi Pongratz | 8/10 | 3214 days | 4% |
| Nita Oussoren | 8/10 | 3214 days | 4% |
| Jessica Ruhland | 6/10 | 3214 days | 3% |
| David Soukal | 7/10 | 3215 days | 4% |
| Sabine Bergen | 7/10 | 3222 days | 4% |
| Sophie NIemann | 9/10 | 3227 days | 4% |
| Josephine | 7/10 | 3235 days | 4% |
| Pierre and Alexandra | 7/10 | 3267 days | 3% |
| Selma Krap | 9/10 | 3273 days | 4% |
| Blandine Giusti | 7/10 | 3535 days | 3% |
| Polly Rider | 8/10 | 3640 days | 2% |
| Greg Gilmore | 8/10 | 3873 days | 2% |
| Fiona Hawkins | 7/10 | 3873 days | 2% |
| Pavel Macek | 9/10 | 3882 days | 2% |
| Anna Sternberg | 5/10 | 3912 days | 1% |
| Roy Matthieu | 6/10 | 3922 days | 1% |
| Julie Ledanois | 7/10 | 3922 days | 1% |
| Pierre Gentile | 6/10 | 3922 days | 1% |
| Cindy Benayoum | 7/10 | 3922 days | 1% |
| Olivia | 8/10 | 3923 days | 1% |
| Callum | 7/10 | 3923 days | 1% |
| Sophia | 6/10 | 3928 days | 1% |
| Andreas Zapke | 8/10 | 3967 days | 1% |
| Simone Pickert | 7/10 | 3968 days | 1% |
| Cindy Bonton | 7/10 | 3978 days | 1% |
| Menu | 8/10 | 4266 days | 0% |
| Christian | 5/10 | 4269 days | 0% |
| Nora | 7/10 | 4269 days | 0% |
| Michael Nolan | 10/10 | 4276 days | 0% |
| Sebastian | 8/10 | 4280 days | 0% |
| Tobi | 9/10 | 4281 days | 0% |
| Chantal Mortel | 7/10 | 4281 days | 0% |
| Alessa Ndra | 10/10 | 4286 days | 0% |
| Fabian Brand | 5/10 | 4297 days | 0% |
| Kyle Guffei | 10/10 | 4299 days | 0% |
| Henrik Steinruecken | 8/10 | 4348 days | 0% |
| Doan | 6/10 | 4371 days | 0% |
| Judy | 10/10 | 4375 days | 0% |
| Petra | 7/10 | 4377 days | 0% |
| Selwindt | 9/10 | 4635 days | 2% |
| Mats Harstedt | 7/10 | 4650 days | 2% |
| Mark Bogton | 8/10 | 4650 days | 2% |
| R E Webb | 9/10 | 4653 days | 2% |
| Roland Hofmann | 7/10 | 4656 days | 2% |
| Lepied | 7/10 | 4657 days | 2% |
| Carla Mathieu | 10/10 | 4660 days | 2% |
| Graham Swinyard | 7/10 | 4664 days | 2% |
| Kurt Furuskar | 9/10 | 4681 days | 2% |
| _mel_ | 8/10 | 4701 days | 2% |
| Theresa | 9/10 | 4748 days | 2% |
| Frans van der Kroon | 8/10 | 4749 days | 2% |
| Elke & Charlotte | 8/10 | 4752 days | 2% |
| Gary A | 9/10 | 4762 days | 2% |
| katel86 | 5/10 | 4823 days | 1% |
| Dogoneit | 4/10 | 4976 days | 1% |
| Shoko Watanabe | 8/10 | 4976 days | 2% |
| Markus | 8/10 | 4979 days | 2% |
| Binder | 8/10 | 4991 days | 2% |
| Nicola Thackray | 7/10 | 4994 days | 2% |
| Katy Bourne | 8/10 | 5001 days | 2% |
| Michael Assfalg | 8/10 | 5006 days | 2% |
| Jon_and_Family | 9/10 | 5007 days | 2% |
| M Holierhoek | 7/10 | 5009 days | 2% |
| Berger | 9/10 | 5011 days | 2% |
| Ron Pantzer | 7/10 | 5016 days | 2% |
| Julian Seizinger | 9/10 | 5022 days | 2% |
| Olivia Carvill | 8/10 | 5023 days | 2% |
| Jarob Brezigar | 5/10 | 5028 days | 1% |
| Markus Richert | 6/10 | 5029 days | 1% |
| Christina Fischer | 5/10 | 5030 days | 1% |
| Bruce & Bonnie Childs | 9/10 | 5034 days | 2% |
| hendrik king | 9/10 | 5066 days | 2% |
| craigy | 6/10 | 5219 days | 1% |
| Monica Askew | 9/10 | 5289 days | 2% |
| Adam Gerrard | 8/10 | 5302 days | 2% |
| Sophie & Joffrey | 7/10 | 5306 days | 2% |
| steveE | 7/10 | 5311 days | 2% |
| Alan & Lorna | 8/10 | 5365 days | 2% |
| Mr and Mrs Scott | 5/10 | 5372 days | 1% |
| B Willmore | 10/10 | 5374 days | 2% |
| Pete H | 10/10 | 5381 days | 2% |
| Johan Wisselo | 7/10 | 5392 days | 2% |
| Tanja Titze | 10/10 | 5393 days | 2% |
| Groen | 8/10 | 5397 days | 2% |
| Kasper | 5/10 | 5398 days | 1% |
| Laura Walters | 8/10 | 5399 days | 2% |
| Ines Diana | 8/10 | 5399 days | 2% |
| uleugel | 8/10 | 5409 days | 2% |
| deanlaw | 9/10 | 5445 days | 2% |
| menzel | 8/10 | 5445 days | 2% |
| blokzyl | 7/10 | 5451 days | 2% |
| braunweiler | 9/10 | 5451 days | 2% |
| Marshall | 9/10 | 5464 days | 2% |
| Karin Linder | 9/10 | 5466 days | 2% |
| Lisette X | 7/10 | 5470 days | 2% |
| Louis Duhaime | 8/10 | 5473 days | 2% |
| paulandcathy | 8/10 | 5517 days | 2% |
| clairet | 7/10 | 5571 days | 2% |
| johannac | 7/10 | 5581 days | 2% |
| Miranda | 8/10 | 5584 days | 2% |
| Charles Lyne | 10/10 | 5676 days | 2% |
| Andrew Lonsdale | 5/10 | 5694 days | 1% |
| RubyJ | 8/10 | 5698 days | 2% |
| arthurwa | 10/10 | 5706 days | 2% |
| Peter Jackie | 7/10 | 5709 days | 2% |
| FiensG | 8/10 | 5725 days | 2% |
| Erik | 7/10 | 5729 days | 2% |
| Grimm | 9/10 | 5730 days | 2% |
| Marlena | 10/10 | 5730 days | 2% |
| Nick | 9/10 | 5735 days | 2% |
| RichardE | 9/10 | 5741 days | 2% |
| Sarah | 7/10 | 5743 days | 2% |
| Manfred | 9/10 | 5743 days | 2% |
| Majken | 5/10 | 5749 days | 1% |
| AurelieD | 7/10 | 5753 days | 2% |
| Nanno | 7/10 | 5757 days | 2% |
| MartinD | 7/10 | 5764 days | 2% |
| Danielle | 10/10 | 5771 days | 2% |
| Sonja | 8/10 | 5773 days | 2% |
| Maettu | 8/10 | 5796 days | 2% |
| Stephanie | 9/10 | 5806 days | 2% |
| Katherine | 7/10 | 5811 days | 2% |
| Claire | 7/10 | 5819 days | 2% |
| helen | 8/10 | 5819 days | 2% |
| Maggie | 9/10 | 5824 days | 2% |
| Patricia | 10/10 | 5828 days | 2% |
| Antonella | 9/10 | 5881 days | 2% |
| Gray | 5/10 | 5942 days | 1% |
| Thomas Bachmann | 8/10 | 5955 days | 2% |
| Leanne Priestley | 8/10 | 6077 days | 2% |
| Amy Clark | 7/10 | 6077 days | 2% |
| Toby | 9/10 | 6078 days | 2% |
| Vikki | 10/10 | 6082 days | 2% |
| Ovin | 9/10 | 6082 days | 2% |
| AlanN316 | 9/10 | 6087 days | 2% |
| Yayami Kimura | 9/10 | 6089 days | 2% |
| Demo | 6/10 | 6090 days | 1% |
| RhysP | 8/10 | 6091 days | 2% |
| Sarah Maudsley | 7/10 | 6092 days | 2% |
| Benjamin Krein | 8/10 | 6097 days | 2% |
| Tina Daly | 6/10 | 6098 days | 1% |
| Ohad | 9/10 | 6099 days | 2% |
| Kathy Hawey | 8/10 | 6105 days | 2% |
| David Buckley | 9/10 | 6106 days | 2% |
| Jackie Horwell | 10/10 | 6107 days | 2% |
| Carla | 7/10 | 6118 days | 2% |
| Hanna | 7/10 | 6119 days | 2% |
| Reina Lohaye | 7/10 | 6121 days | 2% |
| Line Oehlinschloger | 5/10 | 6145 days | 1% |
| Tim | 8/10 | 6146 days | 2% |
| Mette de Graap | 7/10 | 6148 days | 2% |
| Andrew Porter | 8/10 | 6154 days | 2% |
| Gerber Liselotte | 9/10 | 6180 days | 2% |
| Samuel Brejeon | 7/10 | 6191 days | 2% |
| Christin | 8/10 | 6196 days | 2% |
| Orla | 3/10 | 6196 days | 1% |
| Pat Brewster | 7/10 | 6308 days | 2% |
| Natalia | 8/10 | 6392 days | 2% |
| Miriam&Eva | 8/10 | 6396 days | 2% |
| Caroline | 8/10 | 6412 days | 2% |
| Klaus | 4/10 | 6413 days | 1% |
| Bonnie | 6/10 | 6416 days | 1% |
| Franklin | 7/10 | 6416 days | 2% |
| Stephanie | 8/10 | 6417 days | 2% |
| andrew julie | 7/10 | 6430 days | 2% |
| Nancy Bill | 7/10 | 6430 days | 2% |
| Daniel | 7/10 | 6432 days | 2% |
| clairekidd | 5/10 | 6435 days | 1% |
| Fred Highsmith | 8/10 | 6436 days | 2% |
| Hannah | 8/10 | 6446 days | 2% |
| Detlef | 5/10 | 6450 days | 1% |
| Delgroot | 8/10 | 6464 days | 2% |
| Herman&Ineke | 5/10 | 6475 days | 1% |
| Janne | 5/10 | 6476 days | 1% |
| Rolf | 9/10 | 6484 days | 2% |
| Nicole | 8/10 | 6484 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
-4.01% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 45 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 | -3.95% |
| 198 | -3.97% |
| 199 | -3.99% |
| 200 | -4.01% |
| 201 | -4.03% |
| 202 | -4.05% |
| 203 | -4.07% |
| … | … |
Balancing Adjustment
11.07% 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.