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
70.34%
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 | 832 days | 100% |
| Eric | 5/10 | 3273 days | 4% |
| Martin Fersebner | 7/10 | 3279 days | 5% |
| Alonso | 8/10 | 3335 days | 5% |
| Andres Gonzalez | 6/10 | 3353 days | 4% |
| Eveline | 8/10 | 3366 days | 5% |
| Anna Gruenewald | 5/10 | 3370 days | 4% |
| Camilla Geert | 6/10 | 3582 days | 3% |
| Sabrina Schneider | 8/10 | 3588 days | 4% |
| Laura Cosquer | 7/10 | 3590 days | 4% |
| Frenziska Schmid | 7/10 | 3603 days | 3% |
| Johanna Kuch | 7/10 | 3631 days | 3% |
| Carmen Pramstaller | 9/10 | 3633 days | 4% |
| Liza Braun | 8/10 | 3634 days | 3% |
| Markus Wabing | 8/10 | 3636 days | 3% |
| Uschi Pongratz | 8/10 | 3636 days | 3% |
| Nita Oussoren | 8/10 | 3636 days | 3% |
| Jessica Ruhland | 6/10 | 3636 days | 3% |
| David Soukal | 7/10 | 3637 days | 3% |
| Sabine Bergen | 7/10 | 3644 days | 3% |
| Sophie NIemann | 9/10 | 3649 days | 3% |
| Josephine | 7/10 | 3657 days | 3% |
| Pierre and Alexandra | 7/10 | 3689 days | 3% |
| Selma Krap | 9/10 | 3695 days | 3% |
| Blandine Giusti | 7/10 | 3957 days | 2% |
| Polly Rider | 8/10 | 4062 days | 1% |
| Greg Gilmore | 8/10 | 4295 days | 0% |
| Fiona Hawkins | 7/10 | 4295 days | 0% |
| Pavel Macek | 9/10 | 4304 days | 0% |
| Anna Sternberg | 5/10 | 4334 days | 0% |
| Roy Matthieu | 6/10 | 4344 days | 0% |
| Julie Ledanois | 7/10 | 4344 days | 0% |
| Pierre Gentile | 6/10 | 4344 days | 0% |
| Cindy Benayoum | 7/10 | 4344 days | 0% |
| Olivia | 8/10 | 4345 days | 0% |
| Callum | 7/10 | 4345 days | 0% |
| Sophia | 6/10 | 4350 days | 0% |
| Andreas Zapke | 8/10 | 4389 days | 2% |
| Simone Pickert | 7/10 | 4390 days | 2% |
| Cindy Bonton | 7/10 | 4400 days | 2% |
| Menu | 8/10 | 4688 days | 2% |
| Christian | 5/10 | 4691 days | 2% |
| Nora | 7/10 | 4691 days | 2% |
| Michael Nolan | 10/10 | 4698 days | 2% |
| Sebastian | 8/10 | 4702 days | 2% |
| Tobi | 9/10 | 4703 days | 2% |
| Chantal Mortel | 7/10 | 4703 days | 2% |
| Alessa Ndra | 10/10 | 4708 days | 2% |
| Fabian Brand | 5/10 | 4719 days | 2% |
| Kyle Guffei | 10/10 | 4721 days | 2% |
| Henrik Steinruecken | 8/10 | 4770 days | 2% |
| Doan | 6/10 | 4793 days | 2% |
| Judy | 10/10 | 4797 days | 2% |
| Petra | 7/10 | 4799 days | 2% |
| Selwindt | 9/10 | 5057 days | 2% |
| Mats Harstedt | 7/10 | 5072 days | 2% |
| Mark Bogton | 8/10 | 5072 days | 2% |
| R E Webb | 9/10 | 5075 days | 2% |
| Roland Hofmann | 7/10 | 5078 days | 2% |
| Lepied | 7/10 | 5079 days | 2% |
| Carla Mathieu | 10/10 | 5082 days | 2% |
| Graham Swinyard | 7/10 | 5086 days | 2% |
| Kurt Furuskar | 9/10 | 5103 days | 2% |
| _mel_ | 8/10 | 5123 days | 2% |
| Theresa | 9/10 | 5170 days | 2% |
| Frans van der Kroon | 8/10 | 5171 days | 2% |
| Elke & Charlotte | 8/10 | 5174 days | 2% |
| Gary A | 9/10 | 5184 days | 2% |
| katel86 | 5/10 | 5245 days | 2% |
| Dogoneit | 4/10 | 5398 days | 2% |
| Shoko Watanabe | 8/10 | 5398 days | 2% |
| Markus | 8/10 | 5401 days | 2% |
| Binder | 8/10 | 5413 days | 2% |
| Nicola Thackray | 7/10 | 5416 days | 2% |
| Katy Bourne | 8/10 | 5423 days | 2% |
| Michael Assfalg | 8/10 | 5428 days | 2% |
| Jon_and_Family | 9/10 | 5429 days | 2% |
| M Holierhoek | 7/10 | 5431 days | 2% |
| Berger | 9/10 | 5433 days | 2% |
| Ron Pantzer | 7/10 | 5438 days | 2% |
| Julian Seizinger | 9/10 | 5444 days | 2% |
| Olivia Carvill | 8/10 | 5445 days | 2% |
| Jarob Brezigar | 5/10 | 5450 days | 2% |
| Markus Richert | 6/10 | 5451 days | 2% |
| Christina Fischer | 5/10 | 5452 days | 2% |
| Bruce & Bonnie Childs | 9/10 | 5456 days | 2% |
| hendrik king | 9/10 | 5488 days | 2% |
| craigy | 6/10 | 5641 days | 2% |
| Monica Askew | 9/10 | 5711 days | 2% |
| Adam Gerrard | 8/10 | 5724 days | 2% |
| Sophie & Joffrey | 7/10 | 5728 days | 2% |
| steveE | 7/10 | 5733 days | 2% |
| Alan & Lorna | 8/10 | 5787 days | 2% |
| Mr and Mrs Scott | 5/10 | 5794 days | 2% |
| B Willmore | 10/10 | 5796 days | 2% |
| Pete H | 10/10 | 5803 days | 2% |
| Johan Wisselo | 7/10 | 5814 days | 2% |
| Tanja Titze | 10/10 | 5815 days | 2% |
| Groen | 8/10 | 5819 days | 2% |
| Kasper | 5/10 | 5820 days | 2% |
| Laura Walters | 8/10 | 5821 days | 2% |
| Ines Diana | 8/10 | 5821 days | 2% |
| uleugel | 8/10 | 5831 days | 2% |
| deanlaw | 9/10 | 5867 days | 2% |
| menzel | 8/10 | 5867 days | 2% |
| blokzyl | 7/10 | 5873 days | 2% |
| braunweiler | 9/10 | 5873 days | 2% |
| Marshall | 9/10 | 5886 days | 2% |
| Karin Linder | 9/10 | 5888 days | 2% |
| Lisette X | 7/10 | 5892 days | 2% |
| Louis Duhaime | 8/10 | 5895 days | 2% |
| paulandcathy | 8/10 | 5939 days | 2% |
| clairet | 7/10 | 5993 days | 2% |
| johannac | 7/10 | 6003 days | 2% |
| Miranda | 8/10 | 6006 days | 2% |
| Charles Lyne | 10/10 | 6098 days | 2% |
| Andrew Lonsdale | 5/10 | 6116 days | 2% |
| RubyJ | 8/10 | 6120 days | 2% |
| arthurwa | 10/10 | 6128 days | 2% |
| Peter Jackie | 7/10 | 6131 days | 2% |
| FiensG | 8/10 | 6147 days | 2% |
| Erik | 7/10 | 6151 days | 2% |
| Grimm | 9/10 | 6152 days | 2% |
| Marlena | 10/10 | 6152 days | 2% |
| Nick | 9/10 | 6157 days | 2% |
| RichardE | 9/10 | 6163 days | 2% |
| Sarah | 7/10 | 6165 days | 2% |
| Manfred | 9/10 | 6165 days | 2% |
| Majken | 5/10 | 6172 days | 2% |
| AurelieD | 7/10 | 6175 days | 2% |
| Nanno | 7/10 | 6179 days | 2% |
| MartinD | 7/10 | 6186 days | 2% |
| Danielle | 10/10 | 6193 days | 2% |
| Sonja | 8/10 | 6195 days | 2% |
| Maettu | 8/10 | 6218 days | 2% |
| Stephanie | 9/10 | 6228 days | 2% |
| Katherine | 7/10 | 6233 days | 2% |
| Claire | 7/10 | 6241 days | 2% |
| helen | 8/10 | 6241 days | 2% |
| Maggie | 9/10 | 6247 days | 2% |
| Patricia | 10/10 | 6250 days | 2% |
| Antonella | 9/10 | 6303 days | 2% |
| Gray | 5/10 | 6364 days | 2% |
| Thomas Bachmann | 8/10 | 6377 days | 2% |
| Leanne Priestley | 8/10 | 6499 days | 2% |
| Amy Clark | 7/10 | 6499 days | 2% |
| Toby | 9/10 | 6500 days | 2% |
| Vikki | 10/10 | 6504 days | 2% |
| Ovin | 9/10 | 6504 days | 2% |
| AlanN316 | 9/10 | 6509 days | 2% |
| Yayami Kimura | 9/10 | 6511 days | 2% |
| Demo | 6/10 | 6512 days | 2% |
| RhysP | 8/10 | 6513 days | 2% |
| Sarah Maudsley | 7/10 | 6514 days | 2% |
| Benjamin Krein | 8/10 | 6519 days | 2% |
| Tina Daly | 6/10 | 6520 days | 2% |
| Ohad | 9/10 | 6521 days | 2% |
| Kathy Hawey | 8/10 | 6527 days | 2% |
| David Buckley | 9/10 | 6528 days | 2% |
| Jackie Horwell | 10/10 | 6529 days | 2% |
| Carla | 7/10 | 6540 days | 2% |
| Hanna | 7/10 | 6541 days | 2% |
| Reina Lohaye | 7/10 | 6543 days | 2% |
| Line Oehlinschloger | 5/10 | 6567 days | 2% |
| Tim | 8/10 | 6568 days | 2% |
| Mette de Graap | 7/10 | 6570 days | 2% |
| Andrew Porter | 8/10 | 6576 days | 2% |
| Gerber Liselotte | 9/10 | 6602 days | 2% |
| Samuel Brejeon | 7/10 | 6613 days | 2% |
| Christin | 8/10 | 6618 days | 2% |
| Orla | 3/10 | 6618 days | 1% |
| Pat Brewster | 7/10 | 6730 days | 2% |
| Natalia | 8/10 | 6814 days | 2% |
| Miriam&Eva | 8/10 | 6818 days | 2% |
| Caroline | 8/10 | 6834 days | 2% |
| Klaus | 4/10 | 6835 days | 2% |
| Bonnie | 6/10 | 6838 days | 2% |
| Franklin | 7/10 | 6838 days | 2% |
| Stephanie | 8/10 | 6839 days | 2% |
| andrew julie | 7/10 | 6852 days | 2% |
| Nancy Bill | 7/10 | 6852 days | 2% |
| Daniel | 7/10 | 6854 days | 2% |
| clairekidd | 5/10 | 6857 days | 2% |
| Fred Highsmith | 8/10 | 6858 days | 2% |
| Hannah | 8/10 | 6868 days | 2% |
| Detlef | 5/10 | 6872 days | 2% |
| Delgroot | 8/10 | 6886 days | 2% |
| Herman&Ineke | 5/10 | 6897 days | 2% |
| Janne | 5/10 | 6898 days | 2% |
| Rolf | 9/10 | 6906 days | 2% |
| Nicole | 8/10 | 6906 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 44 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 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
9.32% 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.