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 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
88.57%
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 | 101 days | 100% |
| Izzy | 7/10 | 1866 days | 4% |
| Auba Mateos | 10/10 | 2969 days | 2% |
| May | 10/10 | 3035 days | 2% |
| Nathan Raymond | 4/10 | 3297 days | 1% |
| Raylene Luison | 8/10 | 3305 days | 2% |
| Tamara | 10/10 | 3330 days | 2% |
| Brennan Jungling | 8/10 | 3336 days | 1% |
| Anita Wallace | 9/10 | 3336 days | 1% |
| Linda and Gunther | 10/10 | 3372 days | 1% |
| Janek Belcher | 8/10 | 4006 days | 0% |
| Robert Erni | 7/10 | 4007 days | 0% |
| Vanessa | 8/10 | 4026 days | 0% |
| Olivia | 8/10 | 4041 days | 0% |
| Callum | 8/10 | 4041 days | 0% |
| David Lee | 8/10 | 4406 days | 0% |
| Thibault Bonenfant | 10/10 | 4490 days | 0% |
| Lisa Blake | 8/10 | 4500 days | 0% |
| Elisabeth | 10/10 | 4781 days | 0% |
| Asha | 7/10 | 4819 days | 0% |
| Mark & Beth Kaufman | 8/10 | 4854 days | 0% |
| Harry Simpson | 10/10 | 4857 days | 0% |
| kirribilliangel | 7/10 | 4941 days | 0% |
| Dave van Bergen | 8/10 | 5089 days | 0% |
| Jennifer Holloway | 9/10 | 5099 days | 0% |
| Julia | 10/10 | 5108 days | 0% |
| Isabell | 7/10 | 5113 days | 0% |
| Tim | 6/10 | 5115 days | 0% |
| WeddingMaven | 9/10 | 5125 days | 0% |
| Natthien Le Gall | 7/10 | 5126 days | 0% |
| Paap | 8/10 | 5130 days | 0% |
| Wouter Jansen | 8/10 | 5130 days | 0% |
| Kat Fleming | 9/10 | 5139 days | 0% |
| Invictus | 8/10 | 5306 days | 0% |
| heather Cardinal | 3/10 | 5445 days | 0% |
| Mathias Skov | 6/10 | 5504 days | 0% |
| jameswhite | 8/10 | 5572 days | 0% |
| asiacritics | 6/10 | 5580 days | 0% |
| nancyburns | 7/10 | 5580 days | 0% |
| Lesley Nixon | 4/10 | 5590 days | 0% |
| Ash Sturm | 10/10 | 5610 days | 0% |
| clairet | 7/10 | 5689 days | 0% |
| BryonyS | 10/10 | 5812 days | 0% |
| Sofie | 8/10 | 5824 days | 0% |
| desl | 10/10 | 5824 days | 0% |
| Steve Harper | 7/10 | 5831 days | 0% |
| Yvanna | 8/10 | 5843 days | 0% |
| LucyPoland | 9/10 | 5845 days | 0% |
| Amelie | 8/10 | 5845 days | 0% |
| OllyD | 7/10 | 5853 days | 0% |
| JessicaS1 | 9/10 | 5856 days | 0% |
| TomC1 | 8/10 | 5857 days | 0% |
| TrevorK | 8/10 | 5857 days | 0% |
| AndyK | 10/10 | 5857 days | 0% |
| SarahK | 10/10 | 5857 days | 0% |
| FrancesG | 8/10 | 5857 days | 0% |
| RachelR | 10/10 | 5857 days | 0% |
| SofiaBrazil | 8/10 | 5857 days | 0% |
| EmmaL | 10/10 | 5857 days | 0% |
| Sarah | 9/10 | 5860 days | 0% |
| Ed | 8/10 | 5860 days | 0% |
| Carmel | 10/10 | 5864 days | 0% |
| Amanda Williams | 10/10 | 5864 days | 0% |
| Cilla | 10/10 | 5865 days | 0% |
| MayGermany | 6/10 | 5866 days | 0% |
| Craig | 10/10 | 5881 days | 0% |
| Florian | 10/10 | 5881 days | 0% |
| SonjaS | 8/10 | 5883 days | 0% |
| Mimi | 10/10 | 5888 days | 0% |
| Jasmine | 10/10 | 5890 days | 0% |
| Rose | 7/10 | 5890 days | 0% |
| Liz | 7/10 | 5896 days | 0% |
| Bonnie Turner | 5/10 | 5914 days | 0% |
| Stephanie | 9/10 | 5924 days | 0% |
| Sonja | 6/10 | 5928 days | 0% |
| Helen | 7/10 | 5936 days | 0% |
| Liekens | 7/10 | 5944 days | 0% |
| Evelyn | 10/10 | 5958 days | 0% |
| Michelle | 7/10 | 5998 days | 0% |
| Chris | 10/10 | 5999 days | 0% |
| Dave | 8/10 | 6014 days | 0% |
| Anna | 10/10 | 6021 days | 0% |
| Ele | 10/10 | 6049 days | 0% |
| Brent Scanlan | 8/10 | 6166 days | 0% |
| Bernie | 9/10 | 6210 days | 0% |
| Emily Houston | 8/10 | 6221 days | 0% |
| Gina | 8/10 | 6233 days | 0% |
| Julie | 7/10 | 6233 days | 0% |
| Katharina | 9/10 | 6236 days | 0% |
| Chris | 4/10 | 6249 days | 0% |
| Andre Obineche | 8/10 | 6264 days | 0% |
| Clive | 7/10 | 6264 days | 0% |
| Lindsey Woosnam | 9/10 | 6267 days | 0% |
| Anu | 5/10 | 6270 days | 0% |
| Lanni | 7/10 | 6271 days | 0% |
| Andrew | 8/10 | 6271 days | 0% |
| Andrew Porter | 6/10 | 6272 days | 0% |
| Pete | 7/10 | 6313 days | 0% |
| Orla | 6/10 | 6314 days | 0% |
| Richard Kindgren | 7/10 | 6316 days | 0% |
| Miriam&Eva | 6/10 | 6514 days | 0% |
| HalRoberts | 7/10 | 6536 days | 0% |
| Will | 8/10 | 6540 days | 0% |
| Helen | 9/10 | 6542 days | 0% |
| Heather | 10/10 | 6542 days | 0% |
| Matt | 8/10 | 6542 days | 0% |
| Richard | 7/10 | 6542 days | 0% |
| ShoshanaAbrams | 9/10 | 6545 days | 0% |
| Elaine | 8/10 | 6545 days | 0% |
| Gwen | 4/10 | 6548 days | 0% |
| Matt | 9/10 | 6552 days | 0% |
| Gillian | 6/10 | 6553 days | 0% |
| Lorraine | 6/10 | 6560 days | 0% |
| Jack | 5/10 | 6560 days | 0% |
| Jen | 6/10 | 6560 days | 0% |
| TrineLyst | 8/10 | 6561 days | 0% |
| Sean | 5/10 | 6564 days | 0% |
| Marcus | 7/10 | 6564 days | 0% |
| Katie | 7/10 | 6564 days | 0% |
| Dan | 8/10 | 6565 days | 0% |
| Sarah | 7/10 | 6565 days | 0% |
| Emma Gareth | 8/10 | 6576 days | 0% |
| MariaNorman | 8/10 | 6580 days | 0% |
| MarcHarris | 8/10 | 6580 days | 0% |
| Tom | 8/10 | 6589 days | 0% |
| Lucy | 9/10 | 6589 days | 0% |
| Nissa | 9/10 | 6589 days | 0% |
| Suzy | 7/10 | 6594 days | 0% |
| Nina | 6/10 | 6596 days | 0% |
| Inga | 5/10 | 6596 days | 0% |
| FredAndersson | 6/10 | 6600 days | 0% |
| Cat | 9/10 | 6602 days | 0% |
| SallySpencer | 3/10 | 6615 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
-1.67% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 83 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 80 | -1.61% |
| 81 | -1.63% |
| 82 | -1.65% |
| 83 | -1.67% |
| 84 | -1.69% |
| 85 | -1.71% |
| 86 | -1.73% |
| … | … |
Balancing Adjustment
1.47% 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
88%
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.