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
132 Valid Reviews
The ZORB Rotorua experience has a total of 133 reviews. There are 132 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 132 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 27 |
|
20% |
| 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% |
78.33% Average
The raw data average (mean) for all the ZORB Rotorua valid reviews is 78.33% and is based on 132 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 132 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
80.11%
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 |
|---|---|---|---|
| Izzy | 7/10 | 1690 days | 100% |
| Auba Mateos | 10/10 | 2793 days | 54% |
| May | 10/10 | 2859 days | 52% |
| Nathan Raymond | 4/10 | 3121 days | 27% |
| Raylene Luison | 8/10 | 3129 days | 42% |
| Tamara | 10/10 | 3154 days | 42% |
| Brennan Jungling | 8/10 | 3160 days | 40% |
| Anita Wallace | 9/10 | 3160 days | 41% |
| Linda and Gunther | 10/10 | 3196 days | 40% |
| Janek Belcher | 8/10 | 3830 days | 17% |
| Robert Erni | 7/10 | 3831 days | 16% |
| Vanessa | 8/10 | 3850 days | 16% |
| Olivia | 8/10 | 3865 days | 16% |
| Callum | 8/10 | 3865 days | 16% |
| David Lee | 8/10 | 4230 days | 3% |
| Thibault Bonenfant | 10/10 | 4314 days | 0% |
| Lisa Blake | 8/10 | 4324 days | 0% |
| Elisabeth | 10/10 | 4605 days | 16% |
| Asha | 7/10 | 4643 days | 15% |
| Mark & Beth Kaufman | 8/10 | 4678 days | 16% |
| Harry Simpson | 10/10 | 4681 days | 16% |
| kirribilliangel | 7/10 | 4765 days | 15% |
| Dave van Bergen | 8/10 | 4913 days | 16% |
| Jennifer Holloway | 9/10 | 4923 days | 16% |
| Julia | 10/10 | 4932 days | 16% |
| Isabell | 7/10 | 4937 days | 15% |
| Tim | 6/10 | 4939 days | 14% |
| WeddingMaven | 9/10 | 4949 days | 16% |
| Natthien Le Gall | 7/10 | 4950 days | 15% |
| Paap | 8/10 | 4954 days | 16% |
| Wouter Jansen | 8/10 | 4954 days | 16% |
| Kat Fleming | 9/10 | 4963 days | 16% |
| Invictus | 8/10 | 5130 days | 16% |
| heather Cardinal | 3/10 | 5269 days | 8% |
| Mathias Skov | 6/10 | 5328 days | 14% |
| jameswhite | 8/10 | 5396 days | 16% |
| asiacritics | 6/10 | 5404 days | 14% |
| nancyburns | 7/10 | 5404 days | 15% |
| Lesley Nixon | 4/10 | 5414 days | 10% |
| Ash Sturm | 10/10 | 5434 days | 16% |
| clairet | 7/10 | 5513 days | 15% |
| BryonyS | 10/10 | 5636 days | 16% |
| Sofie | 8/10 | 5648 days | 16% |
| desl | 10/10 | 5648 days | 16% |
| Steve Harper | 7/10 | 5655 days | 15% |
| Yvanna | 8/10 | 5667 days | 16% |
| LucyPoland | 9/10 | 5669 days | 16% |
| Amelie | 8/10 | 5669 days | 16% |
| OllyD | 7/10 | 5677 days | 15% |
| JessicaS1 | 9/10 | 5680 days | 16% |
| TomC1 | 8/10 | 5681 days | 16% |
| TrevorK | 8/10 | 5681 days | 16% |
| AndyK | 10/10 | 5681 days | 16% |
| SarahK | 10/10 | 5681 days | 16% |
| FrancesG | 8/10 | 5681 days | 16% |
| RachelR | 10/10 | 5681 days | 16% |
| SofiaBrazil | 8/10 | 5681 days | 16% |
| EmmaL | 10/10 | 5681 days | 16% |
| Sarah | 9/10 | 5684 days | 16% |
| Ed | 8/10 | 5684 days | 16% |
| Carmel | 10/10 | 5688 days | 16% |
| Amanda Williams | 10/10 | 5688 days | 16% |
| Cilla | 10/10 | 5689 days | 16% |
| MayGermany | 6/10 | 5690 days | 14% |
| Craig | 10/10 | 5705 days | 16% |
| Florian | 10/10 | 5705 days | 16% |
| SonjaS | 8/10 | 5707 days | 16% |
| Mimi | 10/10 | 5712 days | 16% |
| Jasmine | 10/10 | 5714 days | 16% |
| Rose | 7/10 | 5714 days | 15% |
| Liz | 7/10 | 5720 days | 15% |
| Bonnie Turner | 5/10 | 5738 days | 12% |
| Stephanie | 9/10 | 5748 days | 16% |
| Sonja | 6/10 | 5752 days | 14% |
| Helen | 7/10 | 5760 days | 15% |
| Liekens | 7/10 | 5768 days | 15% |
| Evelyn | 10/10 | 5782 days | 16% |
| Michelle | 7/10 | 5822 days | 15% |
| Chris | 10/10 | 5823 days | 16% |
| Dave | 8/10 | 5838 days | 16% |
| Anna | 10/10 | 5845 days | 16% |
| Ele | 10/10 | 5873 days | 16% |
| Brent Scanlan | 8/10 | 5990 days | 16% |
| Bernie | 9/10 | 6034 days | 16% |
| Emily Houston | 8/10 | 6045 days | 16% |
| Gina | 8/10 | 6057 days | 16% |
| Julie | 7/10 | 6057 days | 15% |
| Katharina | 9/10 | 6060 days | 16% |
| Chris | 4/10 | 6073 days | 10% |
| Andre Obineche | 8/10 | 6088 days | 16% |
| Clive | 7/10 | 6088 days | 15% |
| Lindsey Woosnam | 9/10 | 6091 days | 16% |
| Anu | 5/10 | 6094 days | 12% |
| Lanni | 7/10 | 6095 days | 15% |
| Andrew | 8/10 | 6095 days | 16% |
| Andrew Porter | 6/10 | 6096 days | 14% |
| Pete | 7/10 | 6137 days | 15% |
| Orla | 6/10 | 6138 days | 14% |
| Richard Kindgren | 7/10 | 6140 days | 15% |
| Miriam&Eva | 6/10 | 6338 days | 14% |
| HalRoberts | 7/10 | 6360 days | 15% |
| Will | 8/10 | 6364 days | 16% |
| Helen | 9/10 | 6366 days | 16% |
| Heather | 10/10 | 6366 days | 16% |
| Matt | 8/10 | 6366 days | 16% |
| Richard | 7/10 | 6366 days | 15% |
| ShoshanaAbrams | 9/10 | 6369 days | 16% |
| Elaine | 8/10 | 6369 days | 16% |
| Gwen | 4/10 | 6372 days | 10% |
| Matt | 9/10 | 6376 days | 16% |
| Gillian | 6/10 | 6377 days | 14% |
| Lorraine | 6/10 | 6384 days | 14% |
| Jack | 5/10 | 6384 days | 12% |
| Jen | 6/10 | 6384 days | 14% |
| TrineLyst | 8/10 | 6385 days | 16% |
| Sean | 5/10 | 6388 days | 12% |
| Marcus | 7/10 | 6388 days | 15% |
| Katie | 7/10 | 6388 days | 15% |
| Dan | 8/10 | 6389 days | 16% |
| Sarah | 7/10 | 6389 days | 15% |
| Emma Gareth | 8/10 | 6400 days | 16% |
| MariaNorman | 8/10 | 6404 days | 16% |
| MarcHarris | 8/10 | 6404 days | 16% |
| Tom | 8/10 | 6413 days | 16% |
| Lucy | 9/10 | 6413 days | 16% |
| Nissa | 9/10 | 6413 days | 16% |
| Suzy | 7/10 | 6418 days | 15% |
| Nina | 6/10 | 6420 days | 14% |
| Inga | 5/10 | 6420 days | 12% |
| FredAndersson | 6/10 | 6424 days | 14% |
| Cat | 9/10 | 6426 days | 16% |
| SallySpencer | 3/10 | 6439 days | 8% |
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
-2.98% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 76 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 | -2.94% |
| 198 | -2.95% |
| 199 | -2.97% |
| 200 | -2.98% |
| 201 | -3.00% |
| 202 | -3.01% |
| 203 | -3.03% |
| … | … |
Balancing Adjustment
3.88% 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
81%
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.