Kia ora, 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
80.24%
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 | 1756 days | 100% |
| Auba Mateos | 10/10 | 2859 days | 59% |
| May | 10/10 | 2925 days | 57% |
| Nathan Raymond | 4/10 | 3187 days | 29% |
| Raylene Luison | 8/10 | 3195 days | 45% |
| Tamara | 10/10 | 3220 days | 44% |
| Brennan Jungling | 8/10 | 3226 days | 43% |
| Anita Wallace | 9/10 | 3226 days | 44% |
| Linda and Gunther | 10/10 | 3262 days | 43% |
| Janek Belcher | 8/10 | 3896 days | 16% |
| Robert Erni | 7/10 | 3897 days | 15% |
| Vanessa | 8/10 | 3916 days | 15% |
| Olivia | 8/10 | 3931 days | 15% |
| Callum | 8/10 | 3931 days | 15% |
| David Lee | 8/10 | 4296 days | 0% |
| Thibault Bonenfant | 10/10 | 4380 days | 18% |
| Lisa Blake | 8/10 | 4390 days | 17% |
| Elisabeth | 10/10 | 4671 days | 18% |
| Asha | 7/10 | 4709 days | 16% |
| Mark & Beth Kaufman | 8/10 | 4744 days | 17% |
| Harry Simpson | 10/10 | 4747 days | 18% |
| kirribilliangel | 7/10 | 4831 days | 16% |
| Dave van Bergen | 8/10 | 4979 days | 17% |
| Jennifer Holloway | 9/10 | 4989 days | 17% |
| Julia | 10/10 | 4998 days | 18% |
| Isabell | 7/10 | 5003 days | 16% |
| Tim | 6/10 | 5005 days | 15% |
| WeddingMaven | 9/10 | 5015 days | 17% |
| Natthien Le Gall | 7/10 | 5016 days | 16% |
| Paap | 8/10 | 5020 days | 17% |
| Wouter Jansen | 8/10 | 5020 days | 17% |
| Kat Fleming | 9/10 | 5029 days | 17% |
| Invictus | 8/10 | 5196 days | 17% |
| heather Cardinal | 3/10 | 5335 days | 8% |
| Mathias Skov | 6/10 | 5394 days | 15% |
| jameswhite | 8/10 | 5462 days | 17% |
| asiacritics | 6/10 | 5470 days | 15% |
| nancyburns | 7/10 | 5470 days | 16% |
| Lesley Nixon | 4/10 | 5480 days | 10% |
| Ash Sturm | 10/10 | 5500 days | 18% |
| clairet | 7/10 | 5579 days | 16% |
| BryonyS | 10/10 | 5702 days | 18% |
| Sofie | 8/10 | 5714 days | 17% |
| desl | 10/10 | 5714 days | 18% |
| Steve Harper | 7/10 | 5721 days | 16% |
| Yvanna | 8/10 | 5733 days | 17% |
| LucyPoland | 9/10 | 5735 days | 17% |
| Amelie | 8/10 | 5735 days | 17% |
| OllyD | 7/10 | 5743 days | 16% |
| JessicaS1 | 9/10 | 5746 days | 17% |
| TomC1 | 8/10 | 5747 days | 17% |
| TrevorK | 8/10 | 5747 days | 17% |
| AndyK | 10/10 | 5747 days | 18% |
| SarahK | 10/10 | 5747 days | 18% |
| FrancesG | 8/10 | 5747 days | 17% |
| RachelR | 10/10 | 5747 days | 18% |
| SofiaBrazil | 8/10 | 5747 days | 17% |
| EmmaL | 10/10 | 5747 days | 18% |
| Sarah | 9/10 | 5750 days | 17% |
| Ed | 8/10 | 5750 days | 17% |
| Carmel | 10/10 | 5754 days | 18% |
| Amanda Williams | 10/10 | 5754 days | 18% |
| Cilla | 10/10 | 5755 days | 18% |
| MayGermany | 6/10 | 5756 days | 15% |
| Craig | 10/10 | 5771 days | 18% |
| Florian | 10/10 | 5771 days | 18% |
| SonjaS | 8/10 | 5773 days | 17% |
| Mimi | 10/10 | 5778 days | 18% |
| Jasmine | 10/10 | 5780 days | 18% |
| Rose | 7/10 | 5780 days | 16% |
| Liz | 7/10 | 5786 days | 16% |
| Bonnie Turner | 5/10 | 5804 days | 13% |
| Stephanie | 9/10 | 5814 days | 17% |
| Sonja | 6/10 | 5818 days | 15% |
| Helen | 7/10 | 5826 days | 16% |
| Liekens | 7/10 | 5834 days | 16% |
| Evelyn | 10/10 | 5848 days | 18% |
| Michelle | 7/10 | 5888 days | 16% |
| Chris | 10/10 | 5889 days | 18% |
| Dave | 8/10 | 5904 days | 17% |
| Anna | 10/10 | 5911 days | 18% |
| Ele | 10/10 | 5939 days | 18% |
| Brent Scanlan | 8/10 | 6056 days | 17% |
| Bernie | 9/10 | 6100 days | 17% |
| Emily Houston | 8/10 | 6111 days | 17% |
| Gina | 8/10 | 6123 days | 17% |
| Julie | 7/10 | 6123 days | 16% |
| Katharina | 9/10 | 6126 days | 17% |
| Chris | 4/10 | 6139 days | 10% |
| Andre Obineche | 8/10 | 6154 days | 17% |
| Clive | 7/10 | 6154 days | 16% |
| Lindsey Woosnam | 9/10 | 6157 days | 17% |
| Anu | 5/10 | 6160 days | 13% |
| Lanni | 7/10 | 6161 days | 16% |
| Andrew | 8/10 | 6161 days | 17% |
| Andrew Porter | 6/10 | 6162 days | 15% |
| Pete | 7/10 | 6203 days | 16% |
| Orla | 6/10 | 6204 days | 15% |
| Richard Kindgren | 7/10 | 6206 days | 16% |
| Miriam&Eva | 6/10 | 6404 days | 15% |
| HalRoberts | 7/10 | 6426 days | 16% |
| Will | 8/10 | 6430 days | 17% |
| Helen | 9/10 | 6432 days | 17% |
| Heather | 10/10 | 6432 days | 18% |
| Matt | 8/10 | 6432 days | 17% |
| Richard | 7/10 | 6432 days | 16% |
| ShoshanaAbrams | 9/10 | 6435 days | 17% |
| Elaine | 8/10 | 6435 days | 17% |
| Gwen | 4/10 | 6438 days | 10% |
| Matt | 9/10 | 6442 days | 17% |
| Gillian | 6/10 | 6443 days | 15% |
| Lorraine | 6/10 | 6450 days | 15% |
| Jack | 5/10 | 6450 days | 13% |
| Jen | 6/10 | 6450 days | 15% |
| TrineLyst | 8/10 | 6451 days | 17% |
| Sean | 5/10 | 6454 days | 13% |
| Marcus | 7/10 | 6454 days | 16% |
| Katie | 7/10 | 6454 days | 16% |
| Dan | 8/10 | 6455 days | 17% |
| Sarah | 7/10 | 6455 days | 16% |
| Emma Gareth | 8/10 | 6466 days | 17% |
| MariaNorman | 8/10 | 6470 days | 17% |
| MarcHarris | 8/10 | 6470 days | 17% |
| Tom | 8/10 | 6479 days | 17% |
| Lucy | 9/10 | 6479 days | 17% |
| Nissa | 9/10 | 6479 days | 17% |
| Suzy | 7/10 | 6484 days | 16% |
| Nina | 6/10 | 6486 days | 15% |
| Inga | 5/10 | 6486 days | 13% |
| FredAndersson | 6/10 | 6490 days | 15% |
| Cat | 9/10 | 6492 days | 17% |
| SallySpencer | 3/10 | 6505 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
-4.05% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 43 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 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
4.20% 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.