Hey, 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 192 reviews. There are 191 valid reviews that are included when calculating the ranking score and 1 invalid review 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
70.13%
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 | 810 days | 100% |
| Eric | 5/10 | 3251 days | 4% |
| Martin Fersebner | 7/10 | 3257 days | 5% |
| Alonso | 8/10 | 3313 days | 5% |
| Andres Gonzalez | 6/10 | 3331 days | 4% |
| Eveline | 8/10 | 3344 days | 5% |
| Anna Gruenewald | 5/10 | 3348 days | 4% |
| Camilla Geert | 6/10 | 3560 days | 3% |
| Sabrina Schneider | 8/10 | 3566 days | 4% |
| Laura Cosquer | 7/10 | 3568 days | 4% |
| Frenziska Schmid | 7/10 | 3581 days | 4% |
| Johanna Kuch | 7/10 | 3609 days | 3% |
| Carmen Pramstaller | 9/10 | 3611 days | 4% |
| Liza Braun | 8/10 | 3612 days | 4% |
| Markus Wabing | 8/10 | 3614 days | 4% |
| Uschi Pongratz | 8/10 | 3614 days | 4% |
| Nita Oussoren | 8/10 | 3614 days | 4% |
| Jessica Ruhland | 6/10 | 3614 days | 3% |
| David Soukal | 7/10 | 3615 days | 3% |
| Sabine Bergen | 7/10 | 3622 days | 3% |
| Sophie NIemann | 9/10 | 3627 days | 4% |
| Josephine | 7/10 | 3635 days | 3% |
| Pierre and Alexandra | 7/10 | 3667 days | 3% |
| Selma Krap | 9/10 | 3673 days | 3% |
| Blandine Giusti | 7/10 | 3935 days | 2% |
| Polly Rider | 8/10 | 4040 days | 2% |
| Greg Gilmore | 8/10 | 4273 days | 0% |
| Fiona Hawkins | 7/10 | 4273 days | 0% |
| Pavel Macek | 9/10 | 4282 days | 0% |
| Anna Sternberg | 5/10 | 4312 days | 0% |
| Roy Matthieu | 6/10 | 4322 days | 0% |
| Julie Ledanois | 7/10 | 4322 days | 0% |
| Pierre Gentile | 6/10 | 4322 days | 0% |
| Cindy Benayoum | 7/10 | 4322 days | 0% |
| Olivia | 8/10 | 4323 days | 0% |
| Callum | 7/10 | 4323 days | 0% |
| Sophia | 6/10 | 4328 days | 0% |
| Andreas Zapke | 8/10 | 4367 days | 0% |
| Simone Pickert | 7/10 | 4368 days | 0% |
| Cindy Bonton | 7/10 | 4378 days | 0% |
| Menu | 8/10 | 4666 days | 2% |
| Christian | 5/10 | 4669 days | 2% |
| Nora | 7/10 | 4669 days | 2% |
| Michael Nolan | 10/10 | 4676 days | 2% |
| Sebastian | 8/10 | 4680 days | 2% |
| Tobi | 9/10 | 4681 days | 2% |
| Chantal Mortel | 7/10 | 4681 days | 2% |
| Alessa Ndra | 10/10 | 4686 days | 2% |
| Fabian Brand | 5/10 | 4697 days | 2% |
| Kyle Guffei | 10/10 | 4699 days | 2% |
| Henrik Steinruecken | 8/10 | 4748 days | 2% |
| Doan | 6/10 | 4771 days | 2% |
| Judy | 10/10 | 4775 days | 2% |
| Petra | 7/10 | 4777 days | 2% |
| Selwindt | 9/10 | 5035 days | 2% |
| Mats Harstedt | 7/10 | 5050 days | 2% |
| Mark Bogton | 8/10 | 5050 days | 2% |
| R E Webb | 9/10 | 5053 days | 2% |
| Roland Hofmann | 7/10 | 5056 days | 2% |
| Lepied | 7/10 | 5057 days | 2% |
| Carla Mathieu | 10/10 | 5060 days | 2% |
| Graham Swinyard | 7/10 | 5064 days | 2% |
| Kurt Furuskar | 9/10 | 5081 days | 2% |
| _mel_ | 8/10 | 5101 days | 2% |
| Theresa | 9/10 | 5148 days | 2% |
| Frans van der Kroon | 8/10 | 5149 days | 2% |
| Elke & Charlotte | 8/10 | 5152 days | 2% |
| Gary A | 9/10 | 5162 days | 2% |
| katel86 | 5/10 | 5223 days | 2% |
| Dogoneit | 4/10 | 5376 days | 2% |
| Shoko Watanabe | 8/10 | 5376 days | 2% |
| Markus | 8/10 | 5379 days | 2% |
| Binder | 8/10 | 5391 days | 2% |
| Nicola Thackray | 7/10 | 5394 days | 2% |
| Katy Bourne | 8/10 | 5401 days | 2% |
| Michael Assfalg | 8/10 | 5406 days | 2% |
| Jon_and_Family | 9/10 | 5407 days | 2% |
| M Holierhoek | 7/10 | 5409 days | 2% |
| Berger | 9/10 | 5411 days | 2% |
| Ron Pantzer | 7/10 | 5416 days | 2% |
| Julian Seizinger | 9/10 | 5422 days | 2% |
| Olivia Carvill | 8/10 | 5423 days | 2% |
| Jarob Brezigar | 5/10 | 5428 days | 2% |
| Markus Richert | 6/10 | 5429 days | 2% |
| Christina Fischer | 5/10 | 5430 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5434 days | 2% |
| hendrik king | 9/10 | 5466 days | 2% |
| craigy | 6/10 | 5619 days | 2% |
| Monica Askew | 9/10 | 5689 days | 2% |
| Adam Gerrard | 8/10 | 5702 days | 2% |
| Sophie & Joffrey | 7/10 | 5706 days | 2% |
| steveE | 7/10 | 5711 days | 2% |
| Alan & Lorna | 8/10 | 5765 days | 2% |
| Mr and Mrs Scott | 5/10 | 5772 days | 2% |
| B Willmore | 10/10 | 5774 days | 2% |
| Pete H | 10/10 | 5781 days | 2% |
| Johan Wisselo | 7/10 | 5792 days | 2% |
| Tanja Titze | 10/10 | 5793 days | 2% |
| Groen | 8/10 | 5797 days | 2% |
| Kasper | 5/10 | 5798 days | 2% |
| Laura Walters | 8/10 | 5799 days | 2% |
| Ines Diana | 8/10 | 5799 days | 2% |
| uleugel | 8/10 | 5809 days | 2% |
| deanlaw | 9/10 | 5845 days | 2% |
| menzel | 8/10 | 5845 days | 2% |
| blokzyl | 7/10 | 5851 days | 2% |
| braunweiler | 9/10 | 5851 days | 2% |
| Marshall | 9/10 | 5864 days | 2% |
| Karin Linder | 9/10 | 5866 days | 2% |
| Lisette X | 7/10 | 5870 days | 2% |
| Louis Duhaime | 8/10 | 5873 days | 2% |
| paulandcathy | 8/10 | 5917 days | 2% |
| clairet | 7/10 | 5971 days | 2% |
| johannac | 7/10 | 5981 days | 2% |
| Miranda | 8/10 | 5984 days | 2% |
| Charles Lyne | 10/10 | 6076 days | 2% |
| Andrew Lonsdale | 5/10 | 6094 days | 2% |
| RubyJ | 8/10 | 6098 days | 2% |
| arthurwa | 10/10 | 6106 days | 2% |
| Peter Jackie | 7/10 | 6109 days | 2% |
| FiensG | 8/10 | 6125 days | 2% |
| Erik | 7/10 | 6129 days | 2% |
| Grimm | 9/10 | 6130 days | 2% |
| Marlena | 10/10 | 6130 days | 2% |
| Nick | 9/10 | 6135 days | 2% |
| RichardE | 9/10 | 6141 days | 2% |
| Sarah | 7/10 | 6142 days | 2% |
| Manfred | 9/10 | 6143 days | 2% |
| Majken | 5/10 | 6149 days | 2% |
| AurelieD | 7/10 | 6153 days | 2% |
| Nanno | 7/10 | 6157 days | 2% |
| MartinD | 7/10 | 6164 days | 2% |
| Danielle | 10/10 | 6171 days | 2% |
| Sonja | 8/10 | 6173 days | 2% |
| Maettu | 8/10 | 6196 days | 2% |
| Stephanie | 9/10 | 6206 days | 2% |
| Katherine | 7/10 | 6211 days | 2% |
| Claire | 7/10 | 6219 days | 2% |
| helen | 8/10 | 6219 days | 2% |
| Maggie | 9/10 | 6224 days | 2% |
| Patricia | 10/10 | 6228 days | 2% |
| Antonella | 9/10 | 6281 days | 2% |
| Gray | 5/10 | 6342 days | 2% |
| Thomas Bachmann | 8/10 | 6354 days | 2% |
| Leanne Priestley | 8/10 | 6477 days | 2% |
| Amy Clark | 7/10 | 6477 days | 2% |
| Toby | 9/10 | 6478 days | 2% |
| Vikki | 10/10 | 6482 days | 2% |
| Ovin | 9/10 | 6482 days | 2% |
| AlanN316 | 9/10 | 6487 days | 2% |
| Yayami Kimura | 9/10 | 6489 days | 2% |
| Demo | 6/10 | 6490 days | 2% |
| RhysP | 8/10 | 6491 days | 2% |
| Sarah Maudsley | 7/10 | 6492 days | 2% |
| Benjamin Krein | 8/10 | 6497 days | 2% |
| Tina Daly | 6/10 | 6498 days | 2% |
| Ohad | 9/10 | 6499 days | 2% |
| Kathy Hawey | 8/10 | 6505 days | 2% |
| David Buckley | 9/10 | 6506 days | 2% |
| Jackie Horwell | 10/10 | 6507 days | 2% |
| Carla | 7/10 | 6518 days | 2% |
| Hanna | 7/10 | 6519 days | 2% |
| Reina Lohaye | 7/10 | 6521 days | 2% |
| Line Oehlinschloger | 5/10 | 6545 days | 2% |
| Tim | 8/10 | 6546 days | 2% |
| Mette de Graap | 7/10 | 6548 days | 2% |
| Andrew Porter | 8/10 | 6554 days | 2% |
| Gerber Liselotte | 9/10 | 6580 days | 2% |
| Samuel Brejeon | 7/10 | 6591 days | 2% |
| Christin | 8/10 | 6596 days | 2% |
| Orla | 3/10 | 6596 days | 1% |
| Pat Brewster | 7/10 | 6708 days | 2% |
| Natalia | 8/10 | 6792 days | 2% |
| Miriam&Eva | 8/10 | 6796 days | 2% |
| Caroline | 8/10 | 6812 days | 2% |
| Klaus | 4/10 | 6813 days | 2% |
| Bonnie | 6/10 | 6816 days | 2% |
| Franklin | 7/10 | 6816 days | 2% |
| Stephanie | 8/10 | 6817 days | 2% |
| andrew julie | 7/10 | 6830 days | 2% |
| Nancy Bill | 7/10 | 6830 days | 2% |
| Daniel | 7/10 | 6832 days | 2% |
| clairekidd | 5/10 | 6835 days | 2% |
| Fred Highsmith | 8/10 | 6836 days | 2% |
| Hannah | 8/10 | 6846 days | 2% |
| Detlef | 5/10 | 6850 days | 2% |
| Delgroot | 8/10 | 6864 days | 2% |
| Herman&Ineke | 5/10 | 6875 days | 2% |
| Janne | 5/10 | 6876 days | 2% |
| Rolf | 9/10 | 6884 days | 2% |
| Nicole | 8/10 | 6884 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
-4.05% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -3.98% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
9.45% 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
76%
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.