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
72.92%
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 | 1134 days | 100% |
| Eric | 5/10 | 3575 days | 6% |
| Martin Fersebner | 7/10 | 3581 days | 7% |
| Alonso | 8/10 | 3637 days | 7% |
| Andres Gonzalez | 6/10 | 3655 days | 6% |
| Eveline | 8/10 | 3668 days | 6% |
| Anna Gruenewald | 5/10 | 3672 days | 5% |
| Camilla Geert | 6/10 | 3884 days | 4% |
| Sabrina Schneider | 8/10 | 3890 days | 4% |
| Laura Cosquer | 7/10 | 3892 days | 4% |
| Frenziska Schmid | 7/10 | 3905 days | 4% |
| Johanna Kuch | 7/10 | 3933 days | 4% |
| Carmen Pramstaller | 9/10 | 3935 days | 4% |
| Liza Braun | 8/10 | 3936 days | 4% |
| Markus Wabing | 8/10 | 3938 days | 4% |
| Uschi Pongratz | 8/10 | 3938 days | 4% |
| Nita Oussoren | 8/10 | 3938 days | 4% |
| Jessica Ruhland | 6/10 | 3938 days | 3% |
| David Soukal | 7/10 | 3939 days | 4% |
| Sabine Bergen | 7/10 | 3946 days | 4% |
| Sophie NIemann | 9/10 | 3951 days | 4% |
| Josephine | 7/10 | 3959 days | 3% |
| Pierre and Alexandra | 7/10 | 3991 days | 3% |
| Selma Krap | 9/10 | 3997 days | 3% |
| Blandine Giusti | 7/10 | 4259 days | 1% |
| Polly Rider | 8/10 | 4364 days | 0% |
| Greg Gilmore | 8/10 | 4597 days | 5% |
| Fiona Hawkins | 7/10 | 4597 days | 4% |
| Pavel Macek | 9/10 | 4606 days | 5% |
| Anna Sternberg | 5/10 | 4636 days | 3% |
| Roy Matthieu | 6/10 | 4646 days | 4% |
| Julie Ledanois | 7/10 | 4646 days | 4% |
| Pierre Gentile | 6/10 | 4646 days | 4% |
| Cindy Benayoum | 7/10 | 4646 days | 4% |
| Olivia | 8/10 | 4647 days | 5% |
| Callum | 7/10 | 4647 days | 4% |
| Sophia | 6/10 | 4652 days | 4% |
| Andreas Zapke | 8/10 | 4691 days | 5% |
| Simone Pickert | 7/10 | 4692 days | 4% |
| Cindy Bonton | 7/10 | 4702 days | 4% |
| Menu | 8/10 | 4990 days | 5% |
| Christian | 5/10 | 4993 days | 3% |
| Nora | 7/10 | 4993 days | 4% |
| Michael Nolan | 10/10 | 5000 days | 5% |
| Sebastian | 8/10 | 5004 days | 5% |
| Tobi | 9/10 | 5005 days | 5% |
| Chantal Mortel | 7/10 | 5005 days | 4% |
| Alessa Ndra | 10/10 | 5010 days | 5% |
| Fabian Brand | 5/10 | 5021 days | 3% |
| Kyle Guffei | 10/10 | 5023 days | 5% |
| Henrik Steinruecken | 8/10 | 5072 days | 5% |
| Doan | 6/10 | 5095 days | 4% |
| Judy | 10/10 | 5099 days | 5% |
| Petra | 7/10 | 5101 days | 4% |
| Selwindt | 9/10 | 5359 days | 5% |
| Mats Harstedt | 7/10 | 5374 days | 4% |
| Mark Bogton | 8/10 | 5374 days | 5% |
| R E Webb | 9/10 | 5377 days | 5% |
| Roland Hofmann | 7/10 | 5380 days | 4% |
| Lepied | 7/10 | 5381 days | 4% |
| Carla Mathieu | 10/10 | 5384 days | 5% |
| Graham Swinyard | 7/10 | 5388 days | 4% |
| Kurt Furuskar | 9/10 | 5405 days | 5% |
| _mel_ | 8/10 | 5425 days | 5% |
| Theresa | 9/10 | 5472 days | 5% |
| Frans van der Kroon | 8/10 | 5473 days | 5% |
| Elke & Charlotte | 8/10 | 5476 days | 5% |
| Gary A | 9/10 | 5486 days | 5% |
| katel86 | 5/10 | 5547 days | 3% |
| Dogoneit | 4/10 | 5700 days | 3% |
| Shoko Watanabe | 8/10 | 5700 days | 5% |
| Markus | 8/10 | 5703 days | 5% |
| Binder | 8/10 | 5715 days | 5% |
| Nicola Thackray | 7/10 | 5718 days | 4% |
| Katy Bourne | 8/10 | 5725 days | 5% |
| Michael Assfalg | 8/10 | 5730 days | 5% |
| Jon_and_Family | 9/10 | 5731 days | 5% |
| M Holierhoek | 7/10 | 5733 days | 4% |
| Berger | 9/10 | 5735 days | 5% |
| Ron Pantzer | 7/10 | 5740 days | 4% |
| Julian Seizinger | 9/10 | 5746 days | 5% |
| Olivia Carvill | 8/10 | 5747 days | 5% |
| Jarob Brezigar | 5/10 | 5752 days | 3% |
| Markus Richert | 6/10 | 5753 days | 4% |
| Christina Fischer | 5/10 | 5754 days | 3% |
| Bruce & Bonnie Childs | 9/10 | 5758 days | 5% |
| hendrik king | 9/10 | 5790 days | 5% |
| craigy | 6/10 | 5943 days | 4% |
| Monica Askew | 9/10 | 6013 days | 5% |
| Adam Gerrard | 8/10 | 6026 days | 5% |
| Sophie & Joffrey | 7/10 | 6030 days | 4% |
| steveE | 7/10 | 6035 days | 4% |
| Alan & Lorna | 8/10 | 6089 days | 5% |
| Mr and Mrs Scott | 5/10 | 6096 days | 3% |
| B Willmore | 10/10 | 6098 days | 5% |
| Pete H | 10/10 | 6105 days | 5% |
| Johan Wisselo | 7/10 | 6116 days | 4% |
| Tanja Titze | 10/10 | 6117 days | 5% |
| Groen | 8/10 | 6121 days | 5% |
| Kasper | 5/10 | 6122 days | 3% |
| Laura Walters | 8/10 | 6123 days | 5% |
| Ines Diana | 8/10 | 6123 days | 5% |
| uleugel | 8/10 | 6133 days | 5% |
| deanlaw | 9/10 | 6169 days | 5% |
| menzel | 8/10 | 6169 days | 5% |
| blokzyl | 7/10 | 6175 days | 4% |
| braunweiler | 9/10 | 6175 days | 5% |
| Marshall | 9/10 | 6188 days | 5% |
| Karin Linder | 9/10 | 6190 days | 5% |
| Lisette X | 7/10 | 6194 days | 4% |
| Louis Duhaime | 8/10 | 6197 days | 5% |
| paulandcathy | 8/10 | 6241 days | 5% |
| clairet | 7/10 | 6295 days | 4% |
| johannac | 7/10 | 6305 days | 4% |
| Miranda | 8/10 | 6308 days | 5% |
| Charles Lyne | 10/10 | 6400 days | 5% |
| Andrew Lonsdale | 5/10 | 6418 days | 3% |
| RubyJ | 8/10 | 6422 days | 5% |
| arthurwa | 10/10 | 6430 days | 5% |
| Peter Jackie | 7/10 | 6433 days | 4% |
| FiensG | 8/10 | 6449 days | 5% |
| Erik | 7/10 | 6452 days | 4% |
| Grimm | 9/10 | 6453 days | 5% |
| Marlena | 10/10 | 6453 days | 5% |
| Nick | 9/10 | 6459 days | 5% |
| RichardE | 9/10 | 6465 days | 5% |
| Sarah | 7/10 | 6466 days | 4% |
| Manfred | 9/10 | 6466 days | 5% |
| Majken | 5/10 | 6473 days | 3% |
| AurelieD | 7/10 | 6477 days | 4% |
| Nanno | 7/10 | 6480 days | 4% |
| MartinD | 7/10 | 6488 days | 4% |
| Danielle | 10/10 | 6494 days | 5% |
| Sonja | 8/10 | 6497 days | 5% |
| Maettu | 8/10 | 6520 days | 5% |
| Stephanie | 9/10 | 6530 days | 5% |
| Katherine | 7/10 | 6535 days | 4% |
| Claire | 7/10 | 6542 days | 4% |
| helen | 8/10 | 6542 days | 5% |
| Maggie | 9/10 | 6548 days | 5% |
| Patricia | 10/10 | 6551 days | 5% |
| Antonella | 9/10 | 6604 days | 5% |
| Gray | 5/10 | 6665 days | 3% |
| Thomas Bachmann | 8/10 | 6678 days | 5% |
| Leanne Priestley | 8/10 | 6801 days | 5% |
| Amy Clark | 7/10 | 6801 days | 4% |
| Toby | 9/10 | 6802 days | 5% |
| Vikki | 10/10 | 6806 days | 5% |
| Ovin | 9/10 | 6806 days | 5% |
| AlanN316 | 9/10 | 6811 days | 5% |
| Yayami Kimura | 9/10 | 6813 days | 5% |
| Demo | 6/10 | 6814 days | 4% |
| RhysP | 8/10 | 6815 days | 5% |
| Sarah Maudsley | 7/10 | 6816 days | 4% |
| Benjamin Krein | 8/10 | 6821 days | 5% |
| Tina Daly | 6/10 | 6822 days | 4% |
| Ohad | 9/10 | 6823 days | 5% |
| Kathy Hawey | 8/10 | 6829 days | 5% |
| David Buckley | 9/10 | 6830 days | 5% |
| Jackie Horwell | 10/10 | 6831 days | 5% |
| Carla | 7/10 | 6842 days | 4% |
| Hanna | 7/10 | 6843 days | 4% |
| Reina Lohaye | 7/10 | 6845 days | 4% |
| Line Oehlinschloger | 5/10 | 6869 days | 3% |
| Tim | 8/10 | 6870 days | 5% |
| Mette de Graap | 7/10 | 6872 days | 4% |
| Andrew Porter | 8/10 | 6878 days | 5% |
| Gerber Liselotte | 9/10 | 6904 days | 5% |
| Samuel Brejeon | 7/10 | 6915 days | 4% |
| Christin | 8/10 | 6920 days | 5% |
| Orla | 3/10 | 6920 days | 2% |
| Pat Brewster | 7/10 | 7032 days | 4% |
| Natalia | 8/10 | 7116 days | 5% |
| Miriam&Eva | 8/10 | 7120 days | 5% |
| Caroline | 8/10 | 7136 days | 5% |
| Klaus | 4/10 | 7137 days | 3% |
| Bonnie | 6/10 | 7140 days | 4% |
| Franklin | 7/10 | 7140 days | 4% |
| Stephanie | 8/10 | 7141 days | 5% |
| andrew julie | 7/10 | 7154 days | 4% |
| Nancy Bill | 7/10 | 7154 days | 4% |
| Daniel | 7/10 | 7156 days | 4% |
| clairekidd | 5/10 | 7159 days | 3% |
| Fred Highsmith | 8/10 | 7160 days | 5% |
| Hannah | 8/10 | 7170 days | 5% |
| Detlef | 5/10 | 7174 days | 3% |
| Delgroot | 8/10 | 7188 days | 5% |
| Herman&Ineke | 5/10 | 7199 days | 3% |
| Janne | 5/10 | 7200 days | 3% |
| Rolf | 9/10 | 7208 days | 5% |
| Nicole | 8/10 | 7208 days | 5% |
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
-3.94% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 47 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 | -3.88% |
| 198 | -3.90% |
| 199 | -3.92% |
| 200 | -3.94% |
| 201 | -3.96% |
| 202 | -3.98% |
| 203 | -4.00% |
| … | … |
Balancing Adjustment
7.59% 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.