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
68.09%
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 | 487 days | 100% |
| Eric | 5/10 | 2928 days | 4% |
| Martin Fersebner | 7/10 | 2934 days | 5% |
| Alonso | 8/10 | 2990 days | 5% |
| Andres Gonzalez | 6/10 | 3008 days | 4% |
| Eveline | 8/10 | 3021 days | 5% |
| Anna Gruenewald | 5/10 | 3025 days | 4% |
| Camilla Geert | 6/10 | 3237 days | 3% |
| Sabrina Schneider | 8/10 | 3243 days | 4% |
| Laura Cosquer | 7/10 | 3245 days | 4% |
| Frenziska Schmid | 7/10 | 3258 days | 4% |
| Johanna Kuch | 7/10 | 3286 days | 4% |
| Carmen Pramstaller | 9/10 | 3288 days | 4% |
| Liza Braun | 8/10 | 3289 days | 4% |
| Markus Wabing | 8/10 | 3291 days | 4% |
| Uschi Pongratz | 8/10 | 3291 days | 4% |
| Nita Oussoren | 8/10 | 3291 days | 4% |
| Jessica Ruhland | 6/10 | 3291 days | 3% |
| David Soukal | 7/10 | 3292 days | 3% |
| Sabine Bergen | 7/10 | 3299 days | 3% |
| Sophie NIemann | 9/10 | 3304 days | 4% |
| Josephine | 7/10 | 3312 days | 3% |
| Pierre and Alexandra | 7/10 | 3344 days | 3% |
| Selma Krap | 9/10 | 3350 days | 4% |
| Blandine Giusti | 7/10 | 3612 days | 2% |
| Polly Rider | 8/10 | 3717 days | 2% |
| Greg Gilmore | 8/10 | 3950 days | 1% |
| Fiona Hawkins | 7/10 | 3950 days | 1% |
| Pavel Macek | 9/10 | 3959 days | 1% |
| Anna Sternberg | 5/10 | 3989 days | 1% |
| Roy Matthieu | 6/10 | 3999 days | 1% |
| Julie Ledanois | 7/10 | 3999 days | 1% |
| Pierre Gentile | 6/10 | 3999 days | 1% |
| Cindy Benayoum | 7/10 | 3999 days | 1% |
| Olivia | 8/10 | 4000 days | 1% |
| Callum | 7/10 | 4000 days | 1% |
| Sophia | 6/10 | 4005 days | 1% |
| Andreas Zapke | 8/10 | 4044 days | 1% |
| Simone Pickert | 7/10 | 4045 days | 1% |
| Cindy Bonton | 7/10 | 4055 days | 1% |
| Menu | 8/10 | 4343 days | 0% |
| Christian | 5/10 | 4346 days | 0% |
| Nora | 7/10 | 4346 days | 0% |
| Michael Nolan | 10/10 | 4353 days | 0% |
| Sebastian | 8/10 | 4357 days | 0% |
| Tobi | 9/10 | 4358 days | 0% |
| Chantal Mortel | 7/10 | 4358 days | 0% |
| Alessa Ndra | 10/10 | 4363 days | 0% |
| Fabian Brand | 5/10 | 4374 days | 0% |
| Kyle Guffei | 10/10 | 4376 days | 0% |
| Henrik Steinruecken | 8/10 | 4425 days | 2% |
| Doan | 6/10 | 4448 days | 2% |
| Judy | 10/10 | 4452 days | 2% |
| Petra | 7/10 | 4454 days | 2% |
| Selwindt | 9/10 | 4712 days | 2% |
| Mats Harstedt | 7/10 | 4727 days | 2% |
| Mark Bogton | 8/10 | 4727 days | 2% |
| R E Webb | 9/10 | 4730 days | 2% |
| Roland Hofmann | 7/10 | 4733 days | 2% |
| Lepied | 7/10 | 4734 days | 2% |
| Carla Mathieu | 10/10 | 4737 days | 2% |
| Graham Swinyard | 7/10 | 4741 days | 2% |
| Kurt Furuskar | 9/10 | 4758 days | 2% |
| _mel_ | 8/10 | 4778 days | 2% |
| Theresa | 9/10 | 4825 days | 2% |
| Frans van der Kroon | 8/10 | 4826 days | 2% |
| Elke & Charlotte | 8/10 | 4829 days | 2% |
| Gary A | 9/10 | 4839 days | 2% |
| katel86 | 5/10 | 4900 days | 1% |
| Dogoneit | 4/10 | 5053 days | 1% |
| Shoko Watanabe | 8/10 | 5053 days | 2% |
| Markus | 8/10 | 5056 days | 2% |
| Binder | 8/10 | 5068 days | 2% |
| Nicola Thackray | 7/10 | 5071 days | 2% |
| Katy Bourne | 8/10 | 5078 days | 2% |
| Michael Assfalg | 8/10 | 5083 days | 2% |
| Jon_and_Family | 9/10 | 5084 days | 2% |
| M Holierhoek | 7/10 | 5086 days | 2% |
| Berger | 9/10 | 5088 days | 2% |
| Ron Pantzer | 7/10 | 5093 days | 2% |
| Julian Seizinger | 9/10 | 5099 days | 2% |
| Olivia Carvill | 8/10 | 5100 days | 2% |
| Jarob Brezigar | 5/10 | 5105 days | 1% |
| Markus Richert | 6/10 | 5106 days | 2% |
| Christina Fischer | 5/10 | 5107 days | 1% |
| Bruce & Bonnie Childs | 9/10 | 5111 days | 2% |
| hendrik king | 9/10 | 5143 days | 2% |
| craigy | 6/10 | 5296 days | 2% |
| Monica Askew | 9/10 | 5366 days | 2% |
| Adam Gerrard | 8/10 | 5379 days | 2% |
| Sophie & Joffrey | 7/10 | 5383 days | 2% |
| steveE | 7/10 | 5388 days | 2% |
| Alan & Lorna | 8/10 | 5442 days | 2% |
| Mr and Mrs Scott | 5/10 | 5449 days | 1% |
| B Willmore | 10/10 | 5451 days | 2% |
| Pete H | 10/10 | 5458 days | 2% |
| Johan Wisselo | 7/10 | 5469 days | 2% |
| Tanja Titze | 10/10 | 5470 days | 2% |
| Groen | 8/10 | 5474 days | 2% |
| Kasper | 5/10 | 5475 days | 1% |
| Laura Walters | 8/10 | 5476 days | 2% |
| Ines Diana | 8/10 | 5476 days | 2% |
| uleugel | 8/10 | 5486 days | 2% |
| deanlaw | 9/10 | 5522 days | 2% |
| menzel | 8/10 | 5522 days | 2% |
| blokzyl | 7/10 | 5528 days | 2% |
| braunweiler | 9/10 | 5528 days | 2% |
| Marshall | 9/10 | 5541 days | 2% |
| Karin Linder | 9/10 | 5543 days | 2% |
| Lisette X | 7/10 | 5547 days | 2% |
| Louis Duhaime | 8/10 | 5550 days | 2% |
| paulandcathy | 8/10 | 5594 days | 2% |
| clairet | 7/10 | 5648 days | 2% |
| johannac | 7/10 | 5658 days | 2% |
| Miranda | 8/10 | 5661 days | 2% |
| Charles Lyne | 10/10 | 5753 days | 2% |
| Andrew Lonsdale | 5/10 | 5771 days | 1% |
| RubyJ | 8/10 | 5775 days | 2% |
| arthurwa | 10/10 | 5783 days | 2% |
| Peter Jackie | 7/10 | 5786 days | 2% |
| FiensG | 8/10 | 5802 days | 2% |
| Erik | 7/10 | 5805 days | 2% |
| Grimm | 9/10 | 5806 days | 2% |
| Marlena | 10/10 | 5806 days | 2% |
| Nick | 9/10 | 5812 days | 2% |
| RichardE | 9/10 | 5818 days | 2% |
| Sarah | 7/10 | 5819 days | 2% |
| Manfred | 9/10 | 5819 days | 2% |
| Majken | 5/10 | 5826 days | 1% |
| AurelieD | 7/10 | 5830 days | 2% |
| Nanno | 7/10 | 5833 days | 2% |
| MartinD | 7/10 | 5841 days | 2% |
| Danielle | 10/10 | 5847 days | 2% |
| Sonja | 8/10 | 5850 days | 2% |
| Maettu | 8/10 | 5873 days | 2% |
| Stephanie | 9/10 | 5883 days | 2% |
| Katherine | 7/10 | 5887 days | 2% |
| Claire | 7/10 | 5895 days | 2% |
| helen | 8/10 | 5895 days | 2% |
| Maggie | 9/10 | 5901 days | 2% |
| Patricia | 10/10 | 5904 days | 2% |
| Antonella | 9/10 | 5957 days | 2% |
| Gray | 5/10 | 6018 days | 1% |
| Thomas Bachmann | 8/10 | 6031 days | 2% |
| Leanne Priestley | 8/10 | 6154 days | 2% |
| Amy Clark | 7/10 | 6154 days | 2% |
| Toby | 9/10 | 6155 days | 2% |
| Vikki | 10/10 | 6159 days | 2% |
| Ovin | 9/10 | 6159 days | 2% |
| AlanN316 | 9/10 | 6164 days | 2% |
| Yayami Kimura | 9/10 | 6166 days | 2% |
| Demo | 6/10 | 6167 days | 2% |
| RhysP | 8/10 | 6168 days | 2% |
| Sarah Maudsley | 7/10 | 6169 days | 2% |
| Benjamin Krein | 8/10 | 6174 days | 2% |
| Tina Daly | 6/10 | 6175 days | 2% |
| Ohad | 9/10 | 6176 days | 2% |
| Kathy Hawey | 8/10 | 6182 days | 2% |
| David Buckley | 9/10 | 6183 days | 2% |
| Jackie Horwell | 10/10 | 6184 days | 2% |
| Carla | 7/10 | 6195 days | 2% |
| Hanna | 7/10 | 6196 days | 2% |
| Reina Lohaye | 7/10 | 6198 days | 2% |
| Line Oehlinschloger | 5/10 | 6222 days | 1% |
| Tim | 8/10 | 6223 days | 2% |
| Mette de Graap | 7/10 | 6225 days | 2% |
| Andrew Porter | 8/10 | 6231 days | 2% |
| Gerber Liselotte | 9/10 | 6257 days | 2% |
| Samuel Brejeon | 7/10 | 6268 days | 2% |
| Christin | 8/10 | 6273 days | 2% |
| Orla | 3/10 | 6273 days | 1% |
| Pat Brewster | 7/10 | 6385 days | 2% |
| Natalia | 8/10 | 6469 days | 2% |
| Miriam&Eva | 8/10 | 6473 days | 2% |
| Caroline | 8/10 | 6489 days | 2% |
| Klaus | 4/10 | 6490 days | 1% |
| Bonnie | 6/10 | 6493 days | 2% |
| Franklin | 7/10 | 6493 days | 2% |
| Stephanie | 8/10 | 6494 days | 2% |
| andrew julie | 7/10 | 6507 days | 2% |
| Nancy Bill | 7/10 | 6507 days | 2% |
| Daniel | 7/10 | 6509 days | 2% |
| clairekidd | 5/10 | 6512 days | 1% |
| Fred Highsmith | 8/10 | 6513 days | 2% |
| Hannah | 8/10 | 6523 days | 2% |
| Detlef | 5/10 | 6527 days | 1% |
| Delgroot | 8/10 | 6541 days | 2% |
| Herman&Ineke | 5/10 | 6552 days | 1% |
| Janne | 5/10 | 6553 days | 1% |
| Rolf | 9/10 | 6561 days | 2% |
| Nicole | 8/10 | 6561 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
-4.14% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 49 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 | -4.08% |
| 198 | -4.10% |
| 199 | -4.12% |
| 200 | -4.14% |
| 201 | -4.16% |
| 202 | -4.18% |
| 203 | -4.20% |
| … | … |
Balancing Adjustment
10.97% 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.