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
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
80.10%
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 | 1737 days | 100% |
| Auba Mateos | 10/10 | 2840 days | 59% |
| May | 10/10 | 2906 days | 57% |
| Nathan Raymond | 4/10 | 3168 days | 30% |
| Raylene Luison | 8/10 | 3176 days | 45% |
| Tamara | 10/10 | 3201 days | 45% |
| Brennan Jungling | 8/10 | 3207 days | 44% |
| Anita Wallace | 9/10 | 3207 days | 45% |
| Linda and Gunther | 10/10 | 3243 days | 44% |
| Janek Belcher | 8/10 | 3877 days | 19% |
| Robert Erni | 7/10 | 3878 days | 18% |
| Vanessa | 8/10 | 3897 days | 18% |
| Olivia | 8/10 | 3912 days | 17% |
| Callum | 8/10 | 3912 days | 17% |
| David Lee | 8/10 | 4277 days | 4% |
| Thibault Bonenfant | 10/10 | 4361 days | 0% |
| Lisa Blake | 8/10 | 4371 days | 0% |
| Elisabeth | 10/10 | 4652 days | 19% |
| Asha | 7/10 | 4690 days | 18% |
| Mark & Beth Kaufman | 8/10 | 4725 days | 19% |
| Harry Simpson | 10/10 | 4728 days | 19% |
| kirribilliangel | 7/10 | 4812 days | 18% |
| Dave van Bergen | 8/10 | 4960 days | 19% |
| Jennifer Holloway | 9/10 | 4970 days | 19% |
| Julia | 10/10 | 4979 days | 19% |
| Isabell | 7/10 | 4984 days | 18% |
| Tim | 6/10 | 4986 days | 17% |
| WeddingMaven | 9/10 | 4996 days | 19% |
| Natthien Le Gall | 7/10 | 4997 days | 18% |
| Paap | 8/10 | 5001 days | 19% |
| Wouter Jansen | 8/10 | 5001 days | 19% |
| Kat Fleming | 9/10 | 5010 days | 19% |
| Invictus | 8/10 | 5177 days | 19% |
| heather Cardinal | 3/10 | 5316 days | 10% |
| Mathias Skov | 6/10 | 5375 days | 17% |
| jameswhite | 8/10 | 5443 days | 19% |
| asiacritics | 6/10 | 5451 days | 17% |
| nancyburns | 7/10 | 5451 days | 18% |
| Lesley Nixon | 4/10 | 5461 days | 13% |
| Ash Sturm | 10/10 | 5481 days | 19% |
| clairet | 7/10 | 5560 days | 18% |
| BryonyS | 10/10 | 5683 days | 19% |
| Sofie | 8/10 | 5695 days | 19% |
| desl | 10/10 | 5695 days | 19% |
| Steve Harper | 7/10 | 5702 days | 18% |
| Yvanna | 8/10 | 5714 days | 19% |
| LucyPoland | 9/10 | 5716 days | 19% |
| Amelie | 8/10 | 5716 days | 19% |
| OllyD | 7/10 | 5724 days | 18% |
| JessicaS1 | 9/10 | 5727 days | 19% |
| TomC1 | 8/10 | 5728 days | 19% |
| TrevorK | 8/10 | 5728 days | 19% |
| AndyK | 10/10 | 5728 days | 19% |
| SarahK | 10/10 | 5728 days | 19% |
| FrancesG | 8/10 | 5728 days | 19% |
| RachelR | 10/10 | 5728 days | 19% |
| SofiaBrazil | 8/10 | 5728 days | 19% |
| EmmaL | 10/10 | 5728 days | 19% |
| Sarah | 9/10 | 5731 days | 19% |
| Ed | 8/10 | 5731 days | 19% |
| Carmel | 10/10 | 5735 days | 19% |
| Amanda Williams | 10/10 | 5735 days | 19% |
| Cilla | 10/10 | 5736 days | 19% |
| MayGermany | 6/10 | 5737 days | 17% |
| Craig | 10/10 | 5752 days | 19% |
| Florian | 10/10 | 5752 days | 19% |
| SonjaS | 8/10 | 5754 days | 19% |
| Mimi | 10/10 | 5759 days | 19% |
| Jasmine | 10/10 | 5761 days | 19% |
| Rose | 7/10 | 5761 days | 18% |
| Liz | 7/10 | 5767 days | 18% |
| Bonnie Turner | 5/10 | 5785 days | 15% |
| Stephanie | 9/10 | 5795 days | 19% |
| Sonja | 6/10 | 5799 days | 17% |
| Helen | 7/10 | 5807 days | 18% |
| Liekens | 7/10 | 5815 days | 18% |
| Evelyn | 10/10 | 5829 days | 19% |
| Michelle | 7/10 | 5869 days | 18% |
| Chris | 10/10 | 5870 days | 19% |
| Dave | 8/10 | 5885 days | 19% |
| Anna | 10/10 | 5892 days | 19% |
| Ele | 10/10 | 5920 days | 19% |
| Brent Scanlan | 8/10 | 6037 days | 19% |
| Bernie | 9/10 | 6081 days | 19% |
| Emily Houston | 8/10 | 6092 days | 19% |
| Gina | 8/10 | 6104 days | 19% |
| Julie | 7/10 | 6104 days | 18% |
| Katharina | 9/10 | 6107 days | 19% |
| Chris | 4/10 | 6120 days | 13% |
| Andre Obineche | 8/10 | 6135 days | 19% |
| Clive | 7/10 | 6135 days | 18% |
| Lindsey Woosnam | 9/10 | 6138 days | 19% |
| Anu | 5/10 | 6141 days | 15% |
| Lanni | 7/10 | 6142 days | 18% |
| Andrew | 8/10 | 6142 days | 19% |
| Andrew Porter | 6/10 | 6143 days | 17% |
| Pete | 7/10 | 6184 days | 18% |
| Orla | 6/10 | 6185 days | 17% |
| Richard Kindgren | 7/10 | 6187 days | 18% |
| Miriam&Eva | 6/10 | 6385 days | 17% |
| HalRoberts | 7/10 | 6407 days | 18% |
| Will | 8/10 | 6411 days | 19% |
| Helen | 9/10 | 6413 days | 19% |
| Heather | 10/10 | 6413 days | 19% |
| Matt | 8/10 | 6413 days | 19% |
| Richard | 7/10 | 6413 days | 18% |
| ShoshanaAbrams | 9/10 | 6416 days | 19% |
| Elaine | 8/10 | 6416 days | 19% |
| Gwen | 4/10 | 6419 days | 13% |
| Matt | 9/10 | 6423 days | 19% |
| Gillian | 6/10 | 6424 days | 17% |
| Lorraine | 6/10 | 6431 days | 17% |
| Jack | 5/10 | 6431 days | 15% |
| Jen | 6/10 | 6431 days | 17% |
| TrineLyst | 8/10 | 6432 days | 19% |
| Sean | 5/10 | 6435 days | 15% |
| Marcus | 7/10 | 6435 days | 18% |
| Katie | 7/10 | 6435 days | 18% |
| Dan | 8/10 | 6436 days | 19% |
| Sarah | 7/10 | 6436 days | 18% |
| Emma Gareth | 8/10 | 6447 days | 19% |
| MariaNorman | 8/10 | 6451 days | 19% |
| MarcHarris | 8/10 | 6451 days | 19% |
| Tom | 8/10 | 6460 days | 19% |
| Lucy | 9/10 | 6460 days | 19% |
| Nissa | 9/10 | 6460 days | 19% |
| Suzy | 7/10 | 6465 days | 18% |
| Nina | 6/10 | 6467 days | 17% |
| Inga | 5/10 | 6467 days | 15% |
| FredAndersson | 6/10 | 6471 days | 17% |
| Cat | 9/10 | 6473 days | 19% |
| SallySpencer | 3/10 | 6486 days | 10% |
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
-3.89% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 49 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 | -3.84% |
| 198 | -3.86% |
| 199 | -3.87% |
| 200 | -3.89% |
| 201 | -3.91% |
| 202 | -3.93% |
| 203 | -3.95% |
| … | … |
Balancing Adjustment
4.19% 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
80%
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.