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
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
88.57%
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 | 145 days | 100% |
| Izzy | 7/10 | 1910 days | 4% |
| Auba Mateos | 10/10 | 3013 days | 2% |
| May | 10/10 | 3079 days | 2% |
| Nathan Raymond | 4/10 | 3341 days | 1% |
| Raylene Luison | 8/10 | 3349 days | 1% |
| Tamara | 10/10 | 3374 days | 1% |
| Brennan Jungling | 8/10 | 3380 days | 1% |
| Anita Wallace | 9/10 | 3380 days | 1% |
| Linda and Gunther | 10/10 | 3416 days | 1% |
| Janek Belcher | 8/10 | 4050 days | 0% |
| Robert Erni | 7/10 | 4051 days | 0% |
| Vanessa | 8/10 | 4070 days | 0% |
| Olivia | 8/10 | 4085 days | 0% |
| Callum | 8/10 | 4085 days | 0% |
| David Lee | 8/10 | 4450 days | 0% |
| Thibault Bonenfant | 10/10 | 4534 days | 0% |
| Lisa Blake | 8/10 | 4544 days | 0% |
| Elisabeth | 10/10 | 4825 days | 0% |
| Asha | 7/10 | 4863 days | 0% |
| Mark & Beth Kaufman | 8/10 | 4898 days | 0% |
| Harry Simpson | 10/10 | 4901 days | 0% |
| kirribilliangel | 7/10 | 4985 days | 0% |
| Dave van Bergen | 8/10 | 5133 days | 0% |
| Jennifer Holloway | 9/10 | 5143 days | 0% |
| Julia | 10/10 | 5152 days | 0% |
| Isabell | 7/10 | 5157 days | 0% |
| Tim | 6/10 | 5159 days | 0% |
| WeddingMaven | 9/10 | 5169 days | 0% |
| Natthien Le Gall | 7/10 | 5170 days | 0% |
| Paap | 8/10 | 5174 days | 0% |
| Wouter Jansen | 8/10 | 5174 days | 0% |
| Kat Fleming | 9/10 | 5183 days | 0% |
| Invictus | 8/10 | 5350 days | 0% |
| heather Cardinal | 3/10 | 5489 days | 0% |
| Mathias Skov | 6/10 | 5548 days | 0% |
| jameswhite | 8/10 | 5616 days | 0% |
| asiacritics | 6/10 | 5624 days | 0% |
| nancyburns | 7/10 | 5624 days | 0% |
| Lesley Nixon | 4/10 | 5634 days | 0% |
| Ash Sturm | 10/10 | 5654 days | 0% |
| clairet | 7/10 | 5733 days | 0% |
| BryonyS | 10/10 | 5856 days | 0% |
| Sofie | 8/10 | 5868 days | 0% |
| desl | 10/10 | 5868 days | 0% |
| Steve Harper | 7/10 | 5875 days | 0% |
| Yvanna | 8/10 | 5887 days | 0% |
| LucyPoland | 9/10 | 5889 days | 0% |
| Amelie | 8/10 | 5889 days | 0% |
| OllyD | 7/10 | 5897 days | 0% |
| JessicaS1 | 9/10 | 5900 days | 0% |
| TomC1 | 8/10 | 5901 days | 0% |
| TrevorK | 8/10 | 5901 days | 0% |
| AndyK | 10/10 | 5901 days | 0% |
| SarahK | 10/10 | 5901 days | 0% |
| FrancesG | 8/10 | 5901 days | 0% |
| RachelR | 10/10 | 5901 days | 0% |
| SofiaBrazil | 8/10 | 5901 days | 0% |
| EmmaL | 10/10 | 5901 days | 0% |
| Sarah | 9/10 | 5904 days | 0% |
| Ed | 8/10 | 5904 days | 0% |
| Carmel | 10/10 | 5908 days | 0% |
| Amanda Williams | 10/10 | 5908 days | 0% |
| Cilla | 10/10 | 5909 days | 0% |
| MayGermany | 6/10 | 5910 days | 0% |
| Craig | 10/10 | 5925 days | 0% |
| Florian | 10/10 | 5925 days | 0% |
| SonjaS | 8/10 | 5927 days | 0% |
| Mimi | 10/10 | 5932 days | 0% |
| Jasmine | 10/10 | 5934 days | 0% |
| Rose | 7/10 | 5934 days | 0% |
| Liz | 7/10 | 5940 days | 0% |
| Bonnie Turner | 5/10 | 5958 days | 0% |
| Stephanie | 9/10 | 5968 days | 0% |
| Sonja | 6/10 | 5972 days | 0% |
| Helen | 7/10 | 5980 days | 0% |
| Liekens | 7/10 | 5988 days | 0% |
| Evelyn | 10/10 | 6002 days | 0% |
| Michelle | 7/10 | 6042 days | 0% |
| Chris | 10/10 | 6043 days | 0% |
| Dave | 8/10 | 6058 days | 0% |
| Anna | 10/10 | 6065 days | 0% |
| Ele | 10/10 | 6093 days | 0% |
| Brent Scanlan | 8/10 | 6210 days | 0% |
| Bernie | 9/10 | 6254 days | 0% |
| Emily Houston | 8/10 | 6265 days | 0% |
| Gina | 8/10 | 6277 days | 0% |
| Julie | 7/10 | 6277 days | 0% |
| Katharina | 9/10 | 6280 days | 0% |
| Chris | 4/10 | 6293 days | 0% |
| Andre Obineche | 8/10 | 6308 days | 0% |
| Clive | 7/10 | 6308 days | 0% |
| Lindsey Woosnam | 9/10 | 6311 days | 0% |
| Anu | 5/10 | 6314 days | 0% |
| Lanni | 7/10 | 6315 days | 0% |
| Andrew | 8/10 | 6315 days | 0% |
| Andrew Porter | 6/10 | 6316 days | 0% |
| Pete | 7/10 | 6357 days | 0% |
| Orla | 6/10 | 6358 days | 0% |
| Richard Kindgren | 7/10 | 6360 days | 0% |
| Miriam&Eva | 6/10 | 6558 days | 0% |
| HalRoberts | 7/10 | 6580 days | 0% |
| Will | 8/10 | 6584 days | 0% |
| Helen | 9/10 | 6586 days | 0% |
| Heather | 10/10 | 6586 days | 0% |
| Matt | 8/10 | 6586 days | 0% |
| Richard | 7/10 | 6586 days | 0% |
| ShoshanaAbrams | 9/10 | 6589 days | 0% |
| Elaine | 8/10 | 6589 days | 0% |
| Gwen | 4/10 | 6592 days | 0% |
| Matt | 9/10 | 6596 days | 0% |
| Gillian | 6/10 | 6597 days | 0% |
| Lorraine | 6/10 | 6604 days | 0% |
| Jack | 5/10 | 6604 days | 0% |
| Jen | 6/10 | 6604 days | 0% |
| TrineLyst | 8/10 | 6605 days | 0% |
| Sean | 5/10 | 6608 days | 0% |
| Marcus | 7/10 | 6608 days | 0% |
| Katie | 7/10 | 6608 days | 0% |
| Dan | 8/10 | 6609 days | 0% |
| Sarah | 7/10 | 6609 days | 0% |
| Emma Gareth | 8/10 | 6620 days | 0% |
| MariaNorman | 8/10 | 6624 days | 0% |
| MarcHarris | 8/10 | 6624 days | 0% |
| Tom | 8/10 | 6633 days | 0% |
| Lucy | 9/10 | 6633 days | 0% |
| Nissa | 9/10 | 6633 days | 0% |
| Suzy | 7/10 | 6638 days | 0% |
| Nina | 6/10 | 6640 days | 0% |
| Inga | 5/10 | 6640 days | 0% |
| FredAndersson | 6/10 | 6644 days | 0% |
| Cat | 9/10 | 6646 days | 0% |
| SallySpencer | 3/10 | 6659 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
-2.06% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 73 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 127 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 124 | -2.01% |
| 125 | -2.03% |
| 126 | -2.05% |
| 127 | -2.06% |
| 128 | -2.08% |
| 129 | -2.09% |
| 130 | -2.11% |
| … | … |
Balancing Adjustment
1.54% 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
88%
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.