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
88.14%
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 | 445 days | 100% |
| Izzy | 7/10 | 2210 days | 4% |
| Auba Mateos | 10/10 | 3313 days | 2% |
| May | 10/10 | 3379 days | 2% |
| Nathan Raymond | 4/10 | 3641 days | 1% |
| Raylene Luison | 8/10 | 3649 days | 2% |
| Tamara | 10/10 | 3674 days | 2% |
| Brennan Jungling | 8/10 | 3680 days | 1% |
| Anita Wallace | 9/10 | 3680 days | 2% |
| Linda and Gunther | 10/10 | 3716 days | 1% |
| Janek Belcher | 8/10 | 4350 days | 0% |
| Robert Erni | 7/10 | 4351 days | 0% |
| Vanessa | 8/10 | 4370 days | 0% |
| Olivia | 8/10 | 4385 days | 1% |
| Callum | 8/10 | 4385 days | 1% |
| David Lee | 8/10 | 4750 days | 1% |
| Thibault Bonenfant | 10/10 | 4834 days | 1% |
| Lisa Blake | 8/10 | 4844 days | 1% |
| Elisabeth | 10/10 | 5125 days | 1% |
| Asha | 7/10 | 5163 days | 1% |
| Mark & Beth Kaufman | 8/10 | 5198 days | 1% |
| Harry Simpson | 10/10 | 5201 days | 1% |
| kirribilliangel | 7/10 | 5285 days | 1% |
| Dave van Bergen | 8/10 | 5433 days | 1% |
| Jennifer Holloway | 9/10 | 5443 days | 1% |
| Julia | 10/10 | 5452 days | 1% |
| Isabell | 7/10 | 5457 days | 1% |
| Tim | 6/10 | 5459 days | 1% |
| WeddingMaven | 9/10 | 5469 days | 1% |
| Natthien Le Gall | 7/10 | 5470 days | 1% |
| Paap | 8/10 | 5474 days | 1% |
| Wouter Jansen | 8/10 | 5474 days | 1% |
| Kat Fleming | 9/10 | 5483 days | 1% |
| Invictus | 8/10 | 5650 days | 1% |
| heather Cardinal | 3/10 | 5789 days | 1% |
| Mathias Skov | 6/10 | 5848 days | 1% |
| jameswhite | 8/10 | 5916 days | 1% |
| asiacritics | 6/10 | 5924 days | 1% |
| nancyburns | 7/10 | 5924 days | 1% |
| Lesley Nixon | 4/10 | 5934 days | 1% |
| Ash Sturm | 10/10 | 5954 days | 1% |
| clairet | 7/10 | 6033 days | 1% |
| BryonyS | 10/10 | 6156 days | 1% |
| Sofie | 8/10 | 6168 days | 1% |
| desl | 10/10 | 6168 days | 1% |
| Steve Harper | 7/10 | 6175 days | 1% |
| Yvanna | 8/10 | 6187 days | 1% |
| LucyPoland | 9/10 | 6189 days | 1% |
| Amelie | 8/10 | 6189 days | 1% |
| OllyD | 7/10 | 6197 days | 1% |
| JessicaS1 | 9/10 | 6200 days | 1% |
| TomC1 | 8/10 | 6201 days | 1% |
| TrevorK | 8/10 | 6201 days | 1% |
| AndyK | 10/10 | 6201 days | 1% |
| SarahK | 10/10 | 6201 days | 1% |
| FrancesG | 8/10 | 6201 days | 1% |
| RachelR | 10/10 | 6201 days | 1% |
| SofiaBrazil | 8/10 | 6201 days | 1% |
| EmmaL | 10/10 | 6201 days | 1% |
| Sarah | 9/10 | 6205 days | 1% |
| Ed | 8/10 | 6205 days | 1% |
| Carmel | 10/10 | 6209 days | 1% |
| Amanda Williams | 10/10 | 6209 days | 1% |
| Cilla | 10/10 | 6210 days | 1% |
| MayGermany | 6/10 | 6210 days | 1% |
| Craig | 10/10 | 6225 days | 1% |
| Florian | 10/10 | 6225 days | 1% |
| SonjaS | 8/10 | 6227 days | 1% |
| Mimi | 10/10 | 6233 days | 1% |
| Jasmine | 10/10 | 6234 days | 1% |
| Rose | 7/10 | 6234 days | 1% |
| Liz | 7/10 | 6241 days | 1% |
| Bonnie Turner | 5/10 | 6258 days | 1% |
| Stephanie | 9/10 | 6268 days | 1% |
| Sonja | 6/10 | 6273 days | 1% |
| Helen | 7/10 | 6281 days | 1% |
| Liekens | 7/10 | 6289 days | 1% |
| Evelyn | 10/10 | 6303 days | 1% |
| Michelle | 7/10 | 6343 days | 1% |
| Chris | 10/10 | 6343 days | 1% |
| Dave | 8/10 | 6359 days | 1% |
| Anna | 10/10 | 6366 days | 1% |
| Ele | 10/10 | 6393 days | 1% |
| Brent Scanlan | 8/10 | 6510 days | 1% |
| Bernie | 9/10 | 6554 days | 1% |
| Emily Houston | 8/10 | 6565 days | 1% |
| Gina | 8/10 | 6577 days | 1% |
| Julie | 7/10 | 6577 days | 1% |
| Katharina | 9/10 | 6580 days | 1% |
| Chris | 4/10 | 6593 days | 1% |
| Andre Obineche | 8/10 | 6608 days | 1% |
| Clive | 7/10 | 6608 days | 1% |
| Lindsey Woosnam | 9/10 | 6611 days | 1% |
| Anu | 5/10 | 6614 days | 1% |
| Lanni | 7/10 | 6615 days | 1% |
| Andrew | 8/10 | 6615 days | 1% |
| Andrew Porter | 6/10 | 6616 days | 1% |
| Pete | 7/10 | 6657 days | 1% |
| Orla | 6/10 | 6658 days | 1% |
| Richard Kindgren | 7/10 | 6660 days | 1% |
| Miriam&Eva | 6/10 | 6858 days | 1% |
| HalRoberts | 7/10 | 6880 days | 1% |
| Will | 8/10 | 6884 days | 1% |
| Helen | 9/10 | 6886 days | 1% |
| Heather | 10/10 | 6886 days | 1% |
| Matt | 8/10 | 6886 days | 1% |
| Richard | 7/10 | 6886 days | 1% |
| ShoshanaAbrams | 9/10 | 6889 days | 1% |
| Elaine | 8/10 | 6889 days | 1% |
| Gwen | 4/10 | 6892 days | 1% |
| Matt | 9/10 | 6896 days | 1% |
| Gillian | 6/10 | 6897 days | 1% |
| Lorraine | 6/10 | 6904 days | 1% |
| Jack | 5/10 | 6904 days | 1% |
| Jen | 6/10 | 6904 days | 1% |
| TrineLyst | 8/10 | 6905 days | 1% |
| Sean | 5/10 | 6908 days | 1% |
| Marcus | 7/10 | 6908 days | 1% |
| Katie | 7/10 | 6908 days | 1% |
| Dan | 8/10 | 6909 days | 1% |
| Sarah | 7/10 | 6909 days | 1% |
| Emma Gareth | 8/10 | 6920 days | 1% |
| MariaNorman | 8/10 | 6924 days | 1% |
| MarcHarris | 8/10 | 6924 days | 1% |
| Tom | 8/10 | 6933 days | 1% |
| Lucy | 9/10 | 6933 days | 1% |
| Nissa | 9/10 | 6933 days | 1% |
| Suzy | 7/10 | 6938 days | 1% |
| Nina | 6/10 | 6940 days | 1% |
| Inga | 5/10 | 6940 days | 1% |
| FredAndersson | 6/10 | 6944 days | 1% |
| Cat | 9/10 | 6946 days | 1% |
| SallySpencer | 3/10 | 6959 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
-4.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 | -4.08% |
| 198 | -4.10% |
| 199 | -4.13% |
| 200 | -4.15% |
| 201 | -4.17% |
| 202 | -4.19% |
| 203 | -4.21% |
| … | … |
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.