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 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
72.05%
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 | 1033 days | 100% |
| Eric | 5/10 | 3474 days | 4% |
| Martin Fersebner | 7/10 | 3480 days | 5% |
| Alonso | 8/10 | 3536 days | 5% |
| Andres Gonzalez | 6/10 | 3554 days | 4% |
| Eveline | 8/10 | 3567 days | 5% |
| Anna Gruenewald | 5/10 | 3571 days | 4% |
| Camilla Geert | 6/10 | 3783 days | 3% |
| Sabrina Schneider | 8/10 | 3789 days | 3% |
| Laura Cosquer | 7/10 | 3791 days | 3% |
| Frenziska Schmid | 7/10 | 3804 days | 3% |
| Johanna Kuch | 7/10 | 3832 days | 3% |
| Carmen Pramstaller | 9/10 | 3834 days | 3% |
| Liza Braun | 8/10 | 3835 days | 3% |
| Markus Wabing | 8/10 | 3837 days | 3% |
| Uschi Pongratz | 8/10 | 3837 days | 3% |
| Nita Oussoren | 8/10 | 3837 days | 3% |
| Jessica Ruhland | 6/10 | 3837 days | 3% |
| David Soukal | 7/10 | 3838 days | 3% |
| Sabine Bergen | 7/10 | 3845 days | 3% |
| Sophie NIemann | 9/10 | 3850 days | 3% |
| Josephine | 7/10 | 3858 days | 3% |
| Pierre and Alexandra | 7/10 | 3890 days | 3% |
| Selma Krap | 9/10 | 3896 days | 3% |
| Blandine Giusti | 7/10 | 4158 days | 1% |
| Polly Rider | 8/10 | 4263 days | 0% |
| Greg Gilmore | 8/10 | 4496 days | 3% |
| Fiona Hawkins | 7/10 | 4496 days | 3% |
| Pavel Macek | 9/10 | 4505 days | 3% |
| Anna Sternberg | 5/10 | 4535 days | 2% |
| Roy Matthieu | 6/10 | 4545 days | 2% |
| Julie Ledanois | 7/10 | 4545 days | 3% |
| Pierre Gentile | 6/10 | 4545 days | 2% |
| Cindy Benayoum | 7/10 | 4545 days | 3% |
| Olivia | 8/10 | 4546 days | 3% |
| Callum | 7/10 | 4546 days | 3% |
| Sophia | 6/10 | 4551 days | 2% |
| Andreas Zapke | 8/10 | 4590 days | 3% |
| Simone Pickert | 7/10 | 4591 days | 3% |
| Cindy Bonton | 7/10 | 4601 days | 3% |
| Menu | 8/10 | 4889 days | 3% |
| Christian | 5/10 | 4892 days | 2% |
| Nora | 7/10 | 4892 days | 3% |
| Michael Nolan | 10/10 | 4899 days | 3% |
| Sebastian | 8/10 | 4903 days | 3% |
| Tobi | 9/10 | 4904 days | 3% |
| Chantal Mortel | 7/10 | 4904 days | 3% |
| Alessa Ndra | 10/10 | 4909 days | 3% |
| Fabian Brand | 5/10 | 4920 days | 2% |
| Kyle Guffei | 10/10 | 4922 days | 3% |
| Henrik Steinruecken | 8/10 | 4971 days | 3% |
| Doan | 6/10 | 4994 days | 2% |
| Judy | 10/10 | 4998 days | 3% |
| Petra | 7/10 | 5000 days | 3% |
| Selwindt | 9/10 | 5258 days | 3% |
| Mats Harstedt | 7/10 | 5273 days | 3% |
| Mark Bogton | 8/10 | 5273 days | 3% |
| R E Webb | 9/10 | 5276 days | 3% |
| Roland Hofmann | 7/10 | 5279 days | 3% |
| Lepied | 7/10 | 5280 days | 3% |
| Carla Mathieu | 10/10 | 5283 days | 3% |
| Graham Swinyard | 7/10 | 5287 days | 3% |
| Kurt Furuskar | 9/10 | 5304 days | 3% |
| _mel_ | 8/10 | 5324 days | 3% |
| Theresa | 9/10 | 5371 days | 3% |
| Frans van der Kroon | 8/10 | 5372 days | 3% |
| Elke & Charlotte | 8/10 | 5375 days | 3% |
| Gary A | 9/10 | 5385 days | 3% |
| katel86 | 5/10 | 5446 days | 2% |
| Dogoneit | 4/10 | 5599 days | 2% |
| Shoko Watanabe | 8/10 | 5599 days | 3% |
| Markus | 8/10 | 5602 days | 3% |
| Binder | 8/10 | 5614 days | 3% |
| Nicola Thackray | 7/10 | 5617 days | 3% |
| Katy Bourne | 8/10 | 5624 days | 3% |
| Michael Assfalg | 8/10 | 5629 days | 3% |
| Jon_and_Family | 9/10 | 5630 days | 3% |
| M Holierhoek | 7/10 | 5632 days | 3% |
| Berger | 9/10 | 5634 days | 3% |
| Ron Pantzer | 7/10 | 5639 days | 3% |
| Julian Seizinger | 9/10 | 5645 days | 3% |
| Olivia Carvill | 8/10 | 5646 days | 3% |
| Jarob Brezigar | 5/10 | 5651 days | 2% |
| Markus Richert | 6/10 | 5652 days | 2% |
| Christina Fischer | 5/10 | 5653 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5657 days | 3% |
| hendrik king | 9/10 | 5689 days | 3% |
| craigy | 6/10 | 5842 days | 2% |
| Monica Askew | 9/10 | 5912 days | 3% |
| Adam Gerrard | 8/10 | 5925 days | 3% |
| Sophie & Joffrey | 7/10 | 5929 days | 3% |
| steveE | 7/10 | 5934 days | 3% |
| Alan & Lorna | 8/10 | 5988 days | 3% |
| Mr and Mrs Scott | 5/10 | 5995 days | 2% |
| B Willmore | 10/10 | 5997 days | 3% |
| Pete H | 10/10 | 6004 days | 3% |
| Johan Wisselo | 7/10 | 6015 days | 3% |
| Tanja Titze | 10/10 | 6016 days | 3% |
| Groen | 8/10 | 6020 days | 3% |
| Kasper | 5/10 | 6021 days | 2% |
| Laura Walters | 8/10 | 6022 days | 3% |
| Ines Diana | 8/10 | 6022 days | 3% |
| uleugel | 8/10 | 6032 days | 3% |
| deanlaw | 9/10 | 6068 days | 3% |
| menzel | 8/10 | 6068 days | 3% |
| blokzyl | 7/10 | 6074 days | 3% |
| braunweiler | 9/10 | 6074 days | 3% |
| Marshall | 9/10 | 6087 days | 3% |
| Karin Linder | 9/10 | 6089 days | 3% |
| Lisette X | 7/10 | 6093 days | 3% |
| Louis Duhaime | 8/10 | 6096 days | 3% |
| paulandcathy | 8/10 | 6140 days | 3% |
| clairet | 7/10 | 6194 days | 3% |
| johannac | 7/10 | 6204 days | 3% |
| Miranda | 8/10 | 6207 days | 3% |
| Charles Lyne | 10/10 | 6299 days | 3% |
| Andrew Lonsdale | 5/10 | 6317 days | 2% |
| RubyJ | 8/10 | 6321 days | 3% |
| arthurwa | 10/10 | 6329 days | 3% |
| Peter Jackie | 7/10 | 6332 days | 3% |
| FiensG | 8/10 | 6348 days | 3% |
| Erik | 7/10 | 6352 days | 3% |
| Grimm | 9/10 | 6353 days | 3% |
| Marlena | 10/10 | 6353 days | 3% |
| Nick | 9/10 | 6358 days | 3% |
| RichardE | 9/10 | 6364 days | 3% |
| Sarah | 7/10 | 6366 days | 3% |
| Manfred | 9/10 | 6366 days | 3% |
| Majken | 5/10 | 6373 days | 2% |
| AurelieD | 7/10 | 6376 days | 3% |
| Nanno | 7/10 | 6380 days | 3% |
| MartinD | 7/10 | 6387 days | 3% |
| Danielle | 10/10 | 6394 days | 3% |
| Sonja | 8/10 | 6397 days | 3% |
| Maettu | 8/10 | 6419 days | 3% |
| Stephanie | 9/10 | 6429 days | 3% |
| Katherine | 7/10 | 6434 days | 3% |
| Claire | 7/10 | 6442 days | 3% |
| helen | 8/10 | 6442 days | 3% |
| Maggie | 9/10 | 6448 days | 3% |
| Patricia | 10/10 | 6451 days | 3% |
| Antonella | 9/10 | 6504 days | 3% |
| Gray | 5/10 | 6565 days | 2% |
| Thomas Bachmann | 8/10 | 6578 days | 3% |
| Leanne Priestley | 8/10 | 6700 days | 3% |
| Amy Clark | 7/10 | 6700 days | 3% |
| Toby | 9/10 | 6701 days | 3% |
| Vikki | 10/10 | 6705 days | 3% |
| Ovin | 9/10 | 6705 days | 3% |
| AlanN316 | 9/10 | 6710 days | 3% |
| Yayami Kimura | 9/10 | 6712 days | 3% |
| Demo | 6/10 | 6713 days | 2% |
| RhysP | 8/10 | 6714 days | 3% |
| Sarah Maudsley | 7/10 | 6715 days | 3% |
| Benjamin Krein | 8/10 | 6720 days | 3% |
| Tina Daly | 6/10 | 6721 days | 2% |
| Ohad | 9/10 | 6722 days | 3% |
| Kathy Hawey | 8/10 | 6728 days | 3% |
| David Buckley | 9/10 | 6729 days | 3% |
| Jackie Horwell | 10/10 | 6730 days | 3% |
| Carla | 7/10 | 6741 days | 3% |
| Hanna | 7/10 | 6742 days | 3% |
| Reina Lohaye | 7/10 | 6744 days | 3% |
| Line Oehlinschloger | 5/10 | 6768 days | 2% |
| Tim | 8/10 | 6769 days | 3% |
| Mette de Graap | 7/10 | 6771 days | 3% |
| Andrew Porter | 8/10 | 6777 days | 3% |
| Gerber Liselotte | 9/10 | 6803 days | 3% |
| Samuel Brejeon | 7/10 | 6814 days | 3% |
| Christin | 8/10 | 6819 days | 3% |
| Orla | 3/10 | 6819 days | 1% |
| Pat Brewster | 7/10 | 6931 days | 3% |
| Natalia | 8/10 | 7015 days | 3% |
| Miriam&Eva | 8/10 | 7019 days | 3% |
| Caroline | 8/10 | 7035 days | 3% |
| Klaus | 4/10 | 7036 days | 2% |
| Bonnie | 6/10 | 7039 days | 2% |
| Franklin | 7/10 | 7039 days | 3% |
| Stephanie | 8/10 | 7040 days | 3% |
| andrew julie | 7/10 | 7053 days | 3% |
| Nancy Bill | 7/10 | 7053 days | 3% |
| Daniel | 7/10 | 7055 days | 3% |
| clairekidd | 5/10 | 7058 days | 2% |
| Fred Highsmith | 8/10 | 7059 days | 3% |
| Hannah | 8/10 | 7069 days | 3% |
| Detlef | 5/10 | 7073 days | 2% |
| Delgroot | 8/10 | 7087 days | 3% |
| Herman&Ineke | 5/10 | 7098 days | 2% |
| Janne | 5/10 | 7099 days | 2% |
| Rolf | 9/10 | 7107 days | 3% |
| Nicole | 8/10 | 7107 days | 3% |
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
-2.08% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 123 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 | -2.05% |
| 198 | -2.06% |
| 199 | -2.07% |
| 200 | -2.08% |
| 201 | -2.09% |
| 202 | -2.11% |
| 203 | -2.12% |
| … | … |
Balancing Adjustment
7.02% 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
77%
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.