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
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
87.89%
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 | 485 days | 100% |
| Izzy | 7/10 | 2250 days | 4% |
| Auba Mateos | 10/10 | 3353 days | 2% |
| May | 10/10 | 3419 days | 2% |
| Nathan Raymond | 4/10 | 3681 days | 0% |
| Raylene Luison | 8/10 | 3689 days | 1% |
| Tamara | 10/10 | 3714 days | 1% |
| Brennan Jungling | 8/10 | 3720 days | 1% |
| Anita Wallace | 9/10 | 3720 days | 1% |
| Linda and Gunther | 10/10 | 3756 days | 1% |
| Janek Belcher | 8/10 | 4390 days | 1% |
| Robert Erni | 7/10 | 4391 days | 0% |
| Vanessa | 8/10 | 4410 days | 1% |
| Olivia | 8/10 | 4425 days | 1% |
| Callum | 8/10 | 4425 days | 1% |
| David Lee | 8/10 | 4790 days | 1% |
| Thibault Bonenfant | 10/10 | 4874 days | 1% |
| Lisa Blake | 8/10 | 4884 days | 1% |
| Elisabeth | 10/10 | 5165 days | 1% |
| Asha | 7/10 | 5203 days | 0% |
| Mark & Beth Kaufman | 8/10 | 5238 days | 1% |
| Harry Simpson | 10/10 | 5241 days | 1% |
| kirribilliangel | 7/10 | 5325 days | 0% |
| Dave van Bergen | 8/10 | 5473 days | 1% |
| Jennifer Holloway | 9/10 | 5483 days | 1% |
| Julia | 10/10 | 5492 days | 1% |
| Isabell | 7/10 | 5497 days | 0% |
| Tim | 6/10 | 5499 days | 0% |
| WeddingMaven | 9/10 | 5509 days | 1% |
| Natthien Le Gall | 7/10 | 5510 days | 0% |
| Paap | 8/10 | 5514 days | 1% |
| Wouter Jansen | 8/10 | 5514 days | 1% |
| Kat Fleming | 9/10 | 5523 days | 1% |
| Invictus | 8/10 | 5690 days | 1% |
| heather Cardinal | 3/10 | 5829 days | 0% |
| Mathias Skov | 6/10 | 5888 days | 0% |
| jameswhite | 8/10 | 5956 days | 1% |
| asiacritics | 6/10 | 5964 days | 0% |
| nancyburns | 7/10 | 5964 days | 0% |
| Lesley Nixon | 4/10 | 5974 days | 0% |
| Ash Sturm | 10/10 | 5994 days | 1% |
| clairet | 7/10 | 6073 days | 0% |
| BryonyS | 10/10 | 6196 days | 1% |
| Sofie | 8/10 | 6208 days | 1% |
| desl | 10/10 | 6208 days | 1% |
| Steve Harper | 7/10 | 6215 days | 0% |
| Yvanna | 8/10 | 6228 days | 1% |
| LucyPoland | 9/10 | 6229 days | 1% |
| Amelie | 8/10 | 6229 days | 1% |
| OllyD | 7/10 | 6237 days | 0% |
| JessicaS1 | 9/10 | 6240 days | 1% |
| TomC1 | 8/10 | 6241 days | 1% |
| TrevorK | 8/10 | 6241 days | 1% |
| AndyK | 10/10 | 6241 days | 1% |
| SarahK | 10/10 | 6241 days | 1% |
| FrancesG | 8/10 | 6241 days | 1% |
| RachelR | 10/10 | 6241 days | 1% |
| SofiaBrazil | 8/10 | 6241 days | 1% |
| EmmaL | 10/10 | 6241 days | 1% |
| Sarah | 9/10 | 6245 days | 1% |
| Ed | 8/10 | 6245 days | 1% |
| Carmel | 10/10 | 6249 days | 1% |
| Amanda Williams | 10/10 | 6249 days | 1% |
| Cilla | 10/10 | 6250 days | 1% |
| MayGermany | 6/10 | 6250 days | 0% |
| Craig | 10/10 | 6266 days | 1% |
| Florian | 10/10 | 6266 days | 1% |
| SonjaS | 8/10 | 6267 days | 1% |
| Mimi | 10/10 | 6273 days | 1% |
| Jasmine | 10/10 | 6275 days | 1% |
| Rose | 7/10 | 6275 days | 0% |
| Liz | 7/10 | 6281 days | 0% |
| Bonnie Turner | 5/10 | 6298 days | 0% |
| Stephanie | 9/10 | 6308 days | 1% |
| Sonja | 6/10 | 6313 days | 0% |
| Helen | 7/10 | 6321 days | 0% |
| Liekens | 7/10 | 6329 days | 0% |
| Evelyn | 10/10 | 6343 days | 1% |
| Michelle | 7/10 | 6383 days | 0% |
| Chris | 10/10 | 6384 days | 1% |
| Dave | 8/10 | 6399 days | 1% |
| Anna | 10/10 | 6406 days | 1% |
| Ele | 10/10 | 6434 days | 1% |
| Brent Scanlan | 8/10 | 6550 days | 1% |
| Bernie | 9/10 | 6594 days | 1% |
| Emily Houston | 8/10 | 6605 days | 1% |
| Gina | 8/10 | 6617 days | 1% |
| Julie | 7/10 | 6617 days | 0% |
| Katharina | 9/10 | 6620 days | 1% |
| Chris | 4/10 | 6633 days | 0% |
| Andre Obineche | 8/10 | 6648 days | 1% |
| Clive | 7/10 | 6648 days | 0% |
| Lindsey Woosnam | 9/10 | 6651 days | 1% |
| Anu | 5/10 | 6654 days | 0% |
| Lanni | 7/10 | 6655 days | 0% |
| Andrew | 8/10 | 6655 days | 1% |
| Andrew Porter | 6/10 | 6656 days | 0% |
| Pete | 7/10 | 6697 days | 0% |
| Orla | 6/10 | 6698 days | 0% |
| Richard Kindgren | 7/10 | 6700 days | 0% |
| Miriam&Eva | 6/10 | 6898 days | 0% |
| HalRoberts | 7/10 | 6920 days | 0% |
| Will | 8/10 | 6924 days | 1% |
| Helen | 9/10 | 6926 days | 1% |
| Heather | 10/10 | 6926 days | 1% |
| Matt | 8/10 | 6926 days | 1% |
| Richard | 7/10 | 6926 days | 0% |
| ShoshanaAbrams | 9/10 | 6929 days | 1% |
| Elaine | 8/10 | 6929 days | 1% |
| Gwen | 4/10 | 6932 days | 0% |
| Matt | 9/10 | 6936 days | 1% |
| Gillian | 6/10 | 6937 days | 0% |
| Lorraine | 6/10 | 6944 days | 0% |
| Jack | 5/10 | 6944 days | 0% |
| Jen | 6/10 | 6944 days | 0% |
| TrineLyst | 8/10 | 6945 days | 1% |
| Sean | 5/10 | 6948 days | 0% |
| Marcus | 7/10 | 6948 days | 0% |
| Katie | 7/10 | 6948 days | 0% |
| Dan | 8/10 | 6949 days | 1% |
| Sarah | 7/10 | 6949 days | 0% |
| Emma Gareth | 8/10 | 6960 days | 1% |
| MariaNorman | 8/10 | 6964 days | 1% |
| MarcHarris | 8/10 | 6964 days | 1% |
| Tom | 8/10 | 6973 days | 1% |
| Lucy | 9/10 | 6973 days | 1% |
| Nissa | 9/10 | 6973 days | 1% |
| Suzy | 7/10 | 6978 days | 0% |
| Nina | 6/10 | 6980 days | 0% |
| Inga | 5/10 | 6980 days | 0% |
| FredAndersson | 6/10 | 6984 days | 0% |
| Cat | 9/10 | 6986 days | 1% |
| SallySpencer | 3/10 | 6999 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
-3.75% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 60 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 | -3.70% |
| 198 | -3.72% |
| 199 | -3.74% |
| 200 | -3.75% |
| 201 | -3.77% |
| 202 | -3.79% |
| 203 | -3.81% |
| … | … |
Balancing Adjustment
2.00% 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.