G'day, 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 ZORB Rotorua.
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.
ZORB Rotorua
Valid Reviews
133 Valid Reviews
The ZORB Rotorua experience has a total of 134 reviews. There are 133 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 133 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 28 |
|
21% |
| 9/10 | 17 |
|
13% |
| 8/10 | 38 |
|
29% |
| 7/10 | 26 |
|
20% |
| 6/10 | 13 |
|
10% |
| 5/10 | 5 |
|
4% |
| 4/10 | 4 |
|
3% |
| 3/10 | 2 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
78.50% Average
The raw data average (mean) for all the ZORB Rotorua valid reviews is 78.50% and is based on 133 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
120 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 133 valid reviews, the experience has 120 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 120 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 24 |
|
20% |
| 9/10 | 16 |
|
13% |
| 8/10 | 37 |
|
31% |
| 7/10 | 21 |
|
18% |
| 6/10 | 12 |
|
10% |
| 5/10 | 4 |
|
3% |
| 4/10 | 4 |
|
3% |
| 3/10 | 2 |
|
2% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
78.42% Average
The raw data average (mean) for all the ZORB Rotorua face-to-face reviews is 78.42% and is based on 120 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
87.64%
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 |
|---|---|---|---|
| Tina Perkins | 10/10 | 562 days | 100% |
| Izzy | 7/10 | 2327 days | 4% |
| Auba Mateos | 10/10 | 3430 days | 2% |
| May | 10/10 | 3496 days | 1% |
| Nathan Raymond | 4/10 | 3758 days | 0% |
| Raylene Luison | 8/10 | 3766 days | 1% |
| Tamara | 10/10 | 3791 days | 1% |
| Brennan Jungling | 8/10 | 3797 days | 1% |
| Anita Wallace | 9/10 | 3797 days | 1% |
| Linda and Gunther | 10/10 | 3833 days | 1% |
| Janek Belcher | 8/10 | 4467 days | 1% |
| Robert Erni | 7/10 | 4468 days | 0% |
| Vanessa | 8/10 | 4487 days | 1% |
| Olivia | 8/10 | 4502 days | 1% |
| Callum | 8/10 | 4502 days | 1% |
| David Lee | 8/10 | 4867 days | 1% |
| Thibault Bonenfant | 10/10 | 4951 days | 1% |
| Lisa Blake | 8/10 | 4961 days | 1% |
| Elisabeth | 10/10 | 5242 days | 1% |
| Asha | 7/10 | 5280 days | 0% |
| Mark & Beth Kaufman | 8/10 | 5315 days | 1% |
| Harry Simpson | 10/10 | 5318 days | 1% |
| kirribilliangel | 7/10 | 5402 days | 0% |
| Dave van Bergen | 8/10 | 5550 days | 1% |
| Jennifer Holloway | 9/10 | 5560 days | 1% |
| Julia | 10/10 | 5569 days | 1% |
| Isabell | 7/10 | 5574 days | 0% |
| Tim | 6/10 | 5576 days | 0% |
| WeddingMaven | 9/10 | 5586 days | 1% |
| Natthien Le Gall | 7/10 | 5587 days | 0% |
| Paap | 8/10 | 5591 days | 1% |
| Wouter Jansen | 8/10 | 5591 days | 1% |
| Kat Fleming | 9/10 | 5600 days | 1% |
| Invictus | 8/10 | 5767 days | 1% |
| heather Cardinal | 3/10 | 5906 days | 0% |
| Mathias Skov | 6/10 | 5965 days | 0% |
| jameswhite | 8/10 | 6033 days | 1% |
| asiacritics | 6/10 | 6041 days | 0% |
| nancyburns | 7/10 | 6041 days | 0% |
| Lesley Nixon | 4/10 | 6051 days | 0% |
| Ash Sturm | 10/10 | 6071 days | 1% |
| clairet | 7/10 | 6150 days | 0% |
| BryonyS | 10/10 | 6273 days | 1% |
| Sofie | 8/10 | 6285 days | 1% |
| desl | 10/10 | 6285 days | 1% |
| Steve Harper | 7/10 | 6292 days | 0% |
| Yvanna | 8/10 | 6304 days | 1% |
| LucyPoland | 9/10 | 6306 days | 1% |
| Amelie | 8/10 | 6306 days | 1% |
| OllyD | 7/10 | 6314 days | 0% |
| JessicaS1 | 9/10 | 6317 days | 1% |
| TomC1 | 8/10 | 6318 days | 1% |
| TrevorK | 8/10 | 6318 days | 1% |
| AndyK | 10/10 | 6318 days | 1% |
| SarahK | 10/10 | 6318 days | 1% |
| FrancesG | 8/10 | 6318 days | 1% |
| RachelR | 10/10 | 6318 days | 1% |
| SofiaBrazil | 8/10 | 6318 days | 1% |
| EmmaL | 10/10 | 6318 days | 1% |
| Sarah | 9/10 | 6322 days | 1% |
| Ed | 8/10 | 6322 days | 1% |
| Carmel | 10/10 | 6325 days | 1% |
| Amanda Williams | 10/10 | 6326 days | 1% |
| Cilla | 10/10 | 6327 days | 1% |
| MayGermany | 6/10 | 6327 days | 0% |
| Craig | 10/10 | 6342 days | 1% |
| Florian | 10/10 | 6342 days | 1% |
| SonjaS | 8/10 | 6344 days | 1% |
| Mimi | 10/10 | 6350 days | 1% |
| Jasmine | 10/10 | 6351 days | 1% |
| Rose | 7/10 | 6351 days | 0% |
| Liz | 7/10 | 6358 days | 0% |
| Bonnie Turner | 5/10 | 6375 days | 0% |
| Stephanie | 9/10 | 6385 days | 1% |
| Sonja | 6/10 | 6390 days | 0% |
| Helen | 7/10 | 6398 days | 0% |
| Liekens | 7/10 | 6406 days | 0% |
| Evelyn | 10/10 | 6420 days | 1% |
| Michelle | 7/10 | 6460 days | 0% |
| Chris | 10/10 | 6460 days | 1% |
| Dave | 8/10 | 6475 days | 1% |
| Anna | 10/10 | 6483 days | 1% |
| Ele | 10/10 | 6510 days | 1% |
| Brent Scanlan | 8/10 | 6627 days | 1% |
| Bernie | 9/10 | 6671 days | 1% |
| Emily Houston | 8/10 | 6682 days | 1% |
| Gina | 8/10 | 6694 days | 1% |
| Julie | 7/10 | 6694 days | 0% |
| Katharina | 9/10 | 6697 days | 1% |
| Chris | 4/10 | 6710 days | 0% |
| Andre Obineche | 8/10 | 6725 days | 1% |
| Clive | 7/10 | 6725 days | 0% |
| Lindsey Woosnam | 9/10 | 6728 days | 1% |
| Anu | 5/10 | 6731 days | 0% |
| Lanni | 7/10 | 6732 days | 0% |
| Andrew | 8/10 | 6732 days | 1% |
| Andrew Porter | 6/10 | 6733 days | 0% |
| Pete | 7/10 | 6774 days | 0% |
| Orla | 6/10 | 6775 days | 0% |
| Richard Kindgren | 7/10 | 6777 days | 0% |
| Miriam&Eva | 6/10 | 6975 days | 0% |
| HalRoberts | 7/10 | 6997 days | 0% |
| Will | 8/10 | 7001 days | 1% |
| Helen | 9/10 | 7003 days | 1% |
| Heather | 10/10 | 7003 days | 1% |
| Matt | 8/10 | 7003 days | 1% |
| Richard | 7/10 | 7003 days | 0% |
| ShoshanaAbrams | 9/10 | 7006 days | 1% |
| Elaine | 8/10 | 7006 days | 1% |
| Gwen | 4/10 | 7009 days | 0% |
| Matt | 9/10 | 7013 days | 1% |
| Gillian | 6/10 | 7014 days | 0% |
| Lorraine | 6/10 | 7021 days | 0% |
| Jack | 5/10 | 7021 days | 0% |
| Jen | 6/10 | 7021 days | 0% |
| TrineLyst | 8/10 | 7022 days | 1% |
| Sean | 5/10 | 7025 days | 0% |
| Marcus | 7/10 | 7025 days | 0% |
| Katie | 7/10 | 7025 days | 0% |
| Dan | 8/10 | 7026 days | 1% |
| Sarah | 7/10 | 7026 days | 0% |
| Emma Gareth | 8/10 | 7037 days | 1% |
| MariaNorman | 8/10 | 7041 days | 1% |
| MarcHarris | 8/10 | 7041 days | 1% |
| Tom | 8/10 | 7050 days | 1% |
| Lucy | 9/10 | 7050 days | 1% |
| Nissa | 9/10 | 7050 days | 1% |
| Suzy | 7/10 | 7055 days | 0% |
| Nina | 6/10 | 7057 days | 0% |
| Inga | 5/10 | 7057 days | 0% |
| FredAndersson | 6/10 | 7061 days | 0% |
| Cat | 9/10 | 7063 days | 1% |
| SallySpencer | 3/10 | 7076 days | 0% |
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 ZORB Rotorua experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.20% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 116 days. However the ZORB Rotorua 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 ZORB Rotorua experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -2.17% |
| 198 | -2.18% |
| 199 | -2.19% |
| 200 | -2.20% |
| 201 | -2.22% |
| 202 | -2.23% |
| 203 | -2.24% |
| … | … |
Balancing Adjustment
1.74% 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
87%
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.