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 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
88.08%
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 | 458 days | 100% |
| Izzy | 7/10 | 2223 days | 4% |
| Auba Mateos | 10/10 | 3326 days | 2% |
| May | 10/10 | 3392 days | 2% |
| Nathan Raymond | 4/10 | 3654 days | 1% |
| Raylene Luison | 8/10 | 3662 days | 2% |
| Tamara | 10/10 | 3687 days | 2% |
| Brennan Jungling | 8/10 | 3693 days | 1% |
| Anita Wallace | 9/10 | 3693 days | 1% |
| Linda and Gunther | 10/10 | 3729 days | 1% |
| Janek Belcher | 8/10 | 4363 days | 0% |
| Robert Erni | 7/10 | 4364 days | 0% |
| Vanessa | 8/10 | 4383 days | 1% |
| Olivia | 8/10 | 4398 days | 1% |
| Callum | 8/10 | 4398 days | 1% |
| David Lee | 8/10 | 4763 days | 1% |
| Thibault Bonenfant | 10/10 | 4847 days | 1% |
| Lisa Blake | 8/10 | 4857 days | 1% |
| Elisabeth | 10/10 | 5138 days | 1% |
| Asha | 7/10 | 5176 days | 1% |
| Mark & Beth Kaufman | 8/10 | 5211 days | 1% |
| Harry Simpson | 10/10 | 5214 days | 1% |
| kirribilliangel | 7/10 | 5298 days | 1% |
| Dave van Bergen | 8/10 | 5446 days | 1% |
| Jennifer Holloway | 9/10 | 5456 days | 1% |
| Julia | 10/10 | 5465 days | 1% |
| Isabell | 7/10 | 5470 days | 1% |
| Tim | 6/10 | 5472 days | 1% |
| WeddingMaven | 9/10 | 5482 days | 1% |
| Natthien Le Gall | 7/10 | 5483 days | 1% |
| Paap | 8/10 | 5487 days | 1% |
| Wouter Jansen | 8/10 | 5487 days | 1% |
| Kat Fleming | 9/10 | 5496 days | 1% |
| Invictus | 8/10 | 5663 days | 1% |
| heather Cardinal | 3/10 | 5802 days | 1% |
| Mathias Skov | 6/10 | 5861 days | 1% |
| jameswhite | 8/10 | 5929 days | 1% |
| asiacritics | 6/10 | 5937 days | 1% |
| nancyburns | 7/10 | 5937 days | 1% |
| Lesley Nixon | 4/10 | 5947 days | 1% |
| Ash Sturm | 10/10 | 5967 days | 1% |
| clairet | 7/10 | 6046 days | 1% |
| BryonyS | 10/10 | 6169 days | 1% |
| Sofie | 8/10 | 6181 days | 1% |
| desl | 10/10 | 6181 days | 1% |
| Steve Harper | 7/10 | 6188 days | 1% |
| Yvanna | 8/10 | 6200 days | 1% |
| LucyPoland | 9/10 | 6202 days | 1% |
| Amelie | 8/10 | 6202 days | 1% |
| OllyD | 7/10 | 6210 days | 1% |
| JessicaS1 | 9/10 | 6213 days | 1% |
| TomC1 | 8/10 | 6214 days | 1% |
| TrevorK | 8/10 | 6214 days | 1% |
| AndyK | 10/10 | 6214 days | 1% |
| SarahK | 10/10 | 6214 days | 1% |
| FrancesG | 8/10 | 6214 days | 1% |
| RachelR | 10/10 | 6214 days | 1% |
| SofiaBrazil | 8/10 | 6214 days | 1% |
| EmmaL | 10/10 | 6214 days | 1% |
| Sarah | 9/10 | 6217 days | 1% |
| Ed | 8/10 | 6217 days | 1% |
| Carmel | 10/10 | 6221 days | 1% |
| Amanda Williams | 10/10 | 6221 days | 1% |
| Cilla | 10/10 | 6222 days | 1% |
| MayGermany | 6/10 | 6223 days | 1% |
| Craig | 10/10 | 6238 days | 1% |
| Florian | 10/10 | 6238 days | 1% |
| SonjaS | 8/10 | 6240 days | 1% |
| Mimi | 10/10 | 6245 days | 1% |
| Jasmine | 10/10 | 6247 days | 1% |
| Rose | 7/10 | 6247 days | 1% |
| Liz | 7/10 | 6253 days | 1% |
| Bonnie Turner | 5/10 | 6271 days | 1% |
| Stephanie | 9/10 | 6281 days | 1% |
| Sonja | 6/10 | 6286 days | 1% |
| Helen | 7/10 | 6293 days | 1% |
| Liekens | 7/10 | 6301 days | 1% |
| Evelyn | 10/10 | 6315 days | 1% |
| Michelle | 7/10 | 6355 days | 1% |
| Chris | 10/10 | 6356 days | 1% |
| Dave | 8/10 | 6371 days | 1% |
| Anna | 10/10 | 6379 days | 1% |
| Ele | 10/10 | 6406 days | 1% |
| Brent Scanlan | 8/10 | 6523 days | 1% |
| Bernie | 9/10 | 6567 days | 1% |
| Emily Houston | 8/10 | 6578 days | 1% |
| Gina | 8/10 | 6590 days | 1% |
| Julie | 7/10 | 6590 days | 1% |
| Katharina | 9/10 | 6593 days | 1% |
| Chris | 4/10 | 6606 days | 1% |
| Andre Obineche | 8/10 | 6621 days | 1% |
| Clive | 7/10 | 6621 days | 1% |
| Lindsey Woosnam | 9/10 | 6624 days | 1% |
| Anu | 5/10 | 6627 days | 1% |
| Lanni | 7/10 | 6628 days | 1% |
| Andrew | 8/10 | 6628 days | 1% |
| Andrew Porter | 6/10 | 6629 days | 1% |
| Pete | 7/10 | 6670 days | 1% |
| Orla | 6/10 | 6671 days | 1% |
| Richard Kindgren | 7/10 | 6673 days | 1% |
| Miriam&Eva | 6/10 | 6871 days | 1% |
| HalRoberts | 7/10 | 6893 days | 1% |
| Will | 8/10 | 6897 days | 1% |
| Helen | 9/10 | 6899 days | 1% |
| Heather | 10/10 | 6899 days | 1% |
| Matt | 8/10 | 6899 days | 1% |
| Richard | 7/10 | 6899 days | 1% |
| ShoshanaAbrams | 9/10 | 6902 days | 1% |
| Elaine | 8/10 | 6902 days | 1% |
| Gwen | 4/10 | 6905 days | 1% |
| Matt | 9/10 | 6909 days | 1% |
| Gillian | 6/10 | 6910 days | 1% |
| Lorraine | 6/10 | 6917 days | 1% |
| Jack | 5/10 | 6917 days | 1% |
| Jen | 6/10 | 6917 days | 1% |
| TrineLyst | 8/10 | 6918 days | 1% |
| Sean | 5/10 | 6921 days | 1% |
| Marcus | 7/10 | 6921 days | 1% |
| Katie | 7/10 | 6921 days | 1% |
| Dan | 8/10 | 6922 days | 1% |
| Sarah | 7/10 | 6922 days | 1% |
| Emma Gareth | 8/10 | 6933 days | 1% |
| MariaNorman | 8/10 | 6937 days | 1% |
| MarcHarris | 8/10 | 6937 days | 1% |
| Tom | 8/10 | 6946 days | 1% |
| Lucy | 9/10 | 6946 days | 1% |
| Nissa | 9/10 | 6946 days | 1% |
| Suzy | 7/10 | 6951 days | 1% |
| Nina | 6/10 | 6953 days | 1% |
| Inga | 5/10 | 6953 days | 1% |
| FredAndersson | 6/10 | 6957 days | 1% |
| Cat | 9/10 | 6959 days | 1% |
| SallySpencer | 3/10 | 6972 days | 1% |
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
-4.09% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 55 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 | -4.03% |
| 198 | -4.05% |
| 199 | -4.07% |
| 200 | -4.09% |
| 201 | -4.11% |
| 202 | -4.13% |
| 203 | -4.15% |
| … | … |
Balancing Adjustment
2.03% 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
86%
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.