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
88.36%
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 | 371 days | 100% |
| Izzy | 7/10 | 2136 days | 4% |
| Auba Mateos | 10/10 | 3239 days | 2% |
| May | 10/10 | 3305 days | 2% |
| Nathan Raymond | 4/10 | 3567 days | 1% |
| Raylene Luison | 8/10 | 3575 days | 2% |
| Tamara | 10/10 | 3600 days | 2% |
| Brennan Jungling | 8/10 | 3606 days | 1% |
| Anita Wallace | 9/10 | 3606 days | 1% |
| Linda and Gunther | 10/10 | 3642 days | 1% |
| Janek Belcher | 8/10 | 4276 days | 0% |
| Robert Erni | 7/10 | 4277 days | 0% |
| Vanessa | 8/10 | 4296 days | 0% |
| Olivia | 8/10 | 4311 days | 0% |
| Callum | 8/10 | 4311 days | 0% |
| David Lee | 8/10 | 4676 days | 1% |
| Thibault Bonenfant | 10/10 | 4760 days | 1% |
| Lisa Blake | 8/10 | 4770 days | 1% |
| Elisabeth | 10/10 | 5051 days | 1% |
| Asha | 7/10 | 5089 days | 1% |
| Mark & Beth Kaufman | 8/10 | 5124 days | 1% |
| Harry Simpson | 10/10 | 5127 days | 1% |
| kirribilliangel | 7/10 | 5211 days | 1% |
| Dave van Bergen | 8/10 | 5359 days | 1% |
| Jennifer Holloway | 9/10 | 5369 days | 1% |
| Julia | 10/10 | 5378 days | 1% |
| Isabell | 7/10 | 5383 days | 1% |
| Tim | 6/10 | 5385 days | 1% |
| WeddingMaven | 9/10 | 5395 days | 1% |
| Natthien Le Gall | 7/10 | 5396 days | 1% |
| Paap | 8/10 | 5400 days | 1% |
| Wouter Jansen | 8/10 | 5400 days | 1% |
| Kat Fleming | 9/10 | 5409 days | 1% |
| Invictus | 8/10 | 5576 days | 1% |
| heather Cardinal | 3/10 | 5715 days | 0% |
| Mathias Skov | 6/10 | 5774 days | 1% |
| jameswhite | 8/10 | 5842 days | 1% |
| asiacritics | 6/10 | 5850 days | 1% |
| nancyburns | 7/10 | 5850 days | 1% |
| Lesley Nixon | 4/10 | 5860 days | 1% |
| Ash Sturm | 10/10 | 5880 days | 1% |
| clairet | 7/10 | 5959 days | 1% |
| BryonyS | 10/10 | 6082 days | 1% |
| Sofie | 8/10 | 6094 days | 1% |
| desl | 10/10 | 6094 days | 1% |
| Steve Harper | 7/10 | 6101 days | 1% |
| Yvanna | 8/10 | 6114 days | 1% |
| LucyPoland | 9/10 | 6115 days | 1% |
| Amelie | 8/10 | 6115 days | 1% |
| OllyD | 7/10 | 6123 days | 1% |
| JessicaS1 | 9/10 | 6126 days | 1% |
| TomC1 | 8/10 | 6127 days | 1% |
| TrevorK | 8/10 | 6127 days | 1% |
| AndyK | 10/10 | 6127 days | 1% |
| SarahK | 10/10 | 6127 days | 1% |
| FrancesG | 8/10 | 6127 days | 1% |
| RachelR | 10/10 | 6127 days | 1% |
| SofiaBrazil | 8/10 | 6127 days | 1% |
| EmmaL | 10/10 | 6127 days | 1% |
| Sarah | 9/10 | 6131 days | 1% |
| Ed | 8/10 | 6131 days | 1% |
| Carmel | 10/10 | 6135 days | 1% |
| Amanda Williams | 10/10 | 6135 days | 1% |
| Cilla | 10/10 | 6136 days | 1% |
| MayGermany | 6/10 | 6136 days | 1% |
| Craig | 10/10 | 6152 days | 1% |
| Florian | 10/10 | 6152 days | 1% |
| SonjaS | 8/10 | 6153 days | 1% |
| Mimi | 10/10 | 6159 days | 1% |
| Jasmine | 10/10 | 6161 days | 1% |
| Rose | 7/10 | 6161 days | 1% |
| Liz | 7/10 | 6167 days | 1% |
| Bonnie Turner | 5/10 | 6184 days | 1% |
| Stephanie | 9/10 | 6194 days | 1% |
| Sonja | 6/10 | 6199 days | 1% |
| Helen | 7/10 | 6207 days | 1% |
| Liekens | 7/10 | 6215 days | 1% |
| Evelyn | 10/10 | 6229 days | 1% |
| Michelle | 7/10 | 6269 days | 1% |
| Chris | 10/10 | 6270 days | 1% |
| Dave | 8/10 | 6285 days | 1% |
| Anna | 10/10 | 6292 days | 1% |
| Ele | 10/10 | 6320 days | 1% |
| Brent Scanlan | 8/10 | 6436 days | 1% |
| Bernie | 9/10 | 6480 days | 1% |
| Emily Houston | 8/10 | 6491 days | 1% |
| Gina | 8/10 | 6503 days | 1% |
| Julie | 7/10 | 6503 days | 1% |
| Katharina | 9/10 | 6506 days | 1% |
| Chris | 4/10 | 6519 days | 1% |
| Andre Obineche | 8/10 | 6534 days | 1% |
| Clive | 7/10 | 6534 days | 1% |
| Lindsey Woosnam | 9/10 | 6537 days | 1% |
| Anu | 5/10 | 6540 days | 1% |
| Lanni | 7/10 | 6541 days | 1% |
| Andrew | 8/10 | 6541 days | 1% |
| Andrew Porter | 6/10 | 6542 days | 1% |
| Pete | 7/10 | 6583 days | 1% |
| Orla | 6/10 | 6584 days | 1% |
| Richard Kindgren | 7/10 | 6586 days | 1% |
| Miriam&Eva | 6/10 | 6784 days | 1% |
| HalRoberts | 7/10 | 6806 days | 1% |
| Will | 8/10 | 6810 days | 1% |
| Helen | 9/10 | 6812 days | 1% |
| Heather | 10/10 | 6812 days | 1% |
| Matt | 8/10 | 6812 days | 1% |
| Richard | 7/10 | 6812 days | 1% |
| ShoshanaAbrams | 9/10 | 6815 days | 1% |
| Elaine | 8/10 | 6815 days | 1% |
| Gwen | 4/10 | 6818 days | 1% |
| Matt | 9/10 | 6822 days | 1% |
| Gillian | 6/10 | 6823 days | 1% |
| Lorraine | 6/10 | 6830 days | 1% |
| Jack | 5/10 | 6830 days | 1% |
| Jen | 6/10 | 6830 days | 1% |
| TrineLyst | 8/10 | 6831 days | 1% |
| Sean | 5/10 | 6834 days | 1% |
| Marcus | 7/10 | 6834 days | 1% |
| Katie | 7/10 | 6834 days | 1% |
| Dan | 8/10 | 6835 days | 1% |
| Sarah | 7/10 | 6835 days | 1% |
| Emma Gareth | 8/10 | 6846 days | 1% |
| MariaNorman | 8/10 | 6850 days | 1% |
| MarcHarris | 8/10 | 6850 days | 1% |
| Tom | 8/10 | 6859 days | 1% |
| Lucy | 9/10 | 6859 days | 1% |
| Nissa | 9/10 | 6859 days | 1% |
| Suzy | 7/10 | 6864 days | 1% |
| Nina | 6/10 | 6866 days | 1% |
| Inga | 5/10 | 6866 days | 1% |
| FredAndersson | 6/10 | 6870 days | 1% |
| Cat | 9/10 | 6872 days | 1% |
| SallySpencer | 3/10 | 6885 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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
1.97% 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.