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 | 1767 days | 100% |
| Auba Mateos | 10/10 | 2870 days | 60% |
| May | 10/10 | 2936 days | 57% |
| Nathan Raymond | 4/10 | 3198 days | 29% |
| Raylene Luison | 8/10 | 3206 days | 45% |
| Tamara | 10/10 | 3231 days | 45% |
| Brennan Jungling | 8/10 | 3237 days | 44% |
| Anita Wallace | 9/10 | 3237 days | 44% |
| Linda and Gunther | 10/10 | 3273 days | 43% |
| Janek Belcher | 8/10 | 3907 days | 16% |
| Robert Erni | 7/10 | 3908 days | 15% |
| Vanessa | 8/10 | 3927 days | 16% |
| Olivia | 8/10 | 3942 days | 15% |
| Callum | 8/10 | 3942 days | 15% |
| David Lee | 8/10 | 4307 days | 0% |
| Thibault Bonenfant | 10/10 | 4391 days | 18% |
| Lisa Blake | 8/10 | 4401 days | 18% |
| Elisabeth | 10/10 | 4682 days | 18% |
| Asha | 7/10 | 4720 days | 17% |
| Mark & Beth Kaufman | 8/10 | 4755 days | 18% |
| Harry Simpson | 10/10 | 4758 days | 18% |
| kirribilliangel | 7/10 | 4842 days | 17% |
| Dave van Bergen | 8/10 | 4990 days | 18% |
| Jennifer Holloway | 9/10 | 5000 days | 18% |
| Julia | 10/10 | 5009 days | 18% |
| Isabell | 7/10 | 5014 days | 17% |
| Tim | 6/10 | 5016 days | 15% |
| WeddingMaven | 9/10 | 5026 days | 18% |
| Natthien Le Gall | 7/10 | 5027 days | 17% |
| Paap | 8/10 | 5031 days | 18% |
| Wouter Jansen | 8/10 | 5031 days | 18% |
| Kat Fleming | 9/10 | 5040 days | 18% |
| Invictus | 8/10 | 5207 days | 18% |
| heather Cardinal | 3/10 | 5346 days | 9% |
| Mathias Skov | 6/10 | 5405 days | 15% |
| jameswhite | 8/10 | 5473 days | 18% |
| asiacritics | 6/10 | 5481 days | 15% |
| nancyburns | 7/10 | 5481 days | 17% |
| Lesley Nixon | 4/10 | 5491 days | 11% |
| Ash Sturm | 10/10 | 5511 days | 18% |
| clairet | 7/10 | 5590 days | 17% |
| BryonyS | 10/10 | 5713 days | 18% |
| Sofie | 8/10 | 5725 days | 18% |
| desl | 10/10 | 5725 days | 18% |
| Steve Harper | 7/10 | 5732 days | 17% |
| Yvanna | 8/10 | 5744 days | 18% |
| LucyPoland | 9/10 | 5746 days | 18% |
| Amelie | 8/10 | 5746 days | 18% |
| OllyD | 7/10 | 5754 days | 17% |
| JessicaS1 | 9/10 | 5757 days | 18% |
| TomC1 | 8/10 | 5758 days | 18% |
| TrevorK | 8/10 | 5758 days | 18% |
| AndyK | 10/10 | 5758 days | 18% |
| SarahK | 10/10 | 5758 days | 18% |
| FrancesG | 8/10 | 5758 days | 18% |
| RachelR | 10/10 | 5758 days | 18% |
| SofiaBrazil | 8/10 | 5758 days | 18% |
| EmmaL | 10/10 | 5758 days | 18% |
| Sarah | 9/10 | 5761 days | 18% |
| Ed | 8/10 | 5761 days | 18% |
| Carmel | 10/10 | 5765 days | 18% |
| Amanda Williams | 10/10 | 5765 days | 18% |
| Cilla | 10/10 | 5766 days | 18% |
| MayGermany | 6/10 | 5767 days | 15% |
| Craig | 10/10 | 5782 days | 18% |
| Florian | 10/10 | 5782 days | 18% |
| SonjaS | 8/10 | 5784 days | 18% |
| Mimi | 10/10 | 5789 days | 18% |
| Jasmine | 10/10 | 5791 days | 18% |
| Rose | 7/10 | 5791 days | 17% |
| Liz | 7/10 | 5797 days | 17% |
| Bonnie Turner | 5/10 | 5815 days | 13% |
| Stephanie | 9/10 | 5825 days | 18% |
| Sonja | 6/10 | 5829 days | 15% |
| Helen | 7/10 | 5837 days | 17% |
| Liekens | 7/10 | 5845 days | 17% |
| Evelyn | 10/10 | 5859 days | 18% |
| Michelle | 7/10 | 5899 days | 17% |
| Chris | 10/10 | 5900 days | 18% |
| Dave | 8/10 | 5915 days | 18% |
| Anna | 10/10 | 5922 days | 18% |
| Ele | 10/10 | 5950 days | 18% |
| Brent Scanlan | 8/10 | 6067 days | 18% |
| Bernie | 9/10 | 6111 days | 18% |
| Emily Houston | 8/10 | 6122 days | 18% |
| Gina | 8/10 | 6134 days | 18% |
| Julie | 7/10 | 6134 days | 17% |
| Katharina | 9/10 | 6137 days | 18% |
| Chris | 4/10 | 6150 days | 11% |
| Andre Obineche | 8/10 | 6165 days | 18% |
| Clive | 7/10 | 6165 days | 17% |
| Lindsey Woosnam | 9/10 | 6168 days | 18% |
| Anu | 5/10 | 6171 days | 13% |
| Lanni | 7/10 | 6172 days | 17% |
| Andrew | 8/10 | 6172 days | 18% |
| Andrew Porter | 6/10 | 6173 days | 15% |
| Pete | 7/10 | 6214 days | 17% |
| Orla | 6/10 | 6215 days | 15% |
| Richard Kindgren | 7/10 | 6217 days | 17% |
| Miriam&Eva | 6/10 | 6415 days | 15% |
| HalRoberts | 7/10 | 6437 days | 17% |
| Will | 8/10 | 6441 days | 18% |
| Helen | 9/10 | 6443 days | 18% |
| Heather | 10/10 | 6443 days | 18% |
| Matt | 8/10 | 6443 days | 18% |
| Richard | 7/10 | 6443 days | 17% |
| ShoshanaAbrams | 9/10 | 6446 days | 18% |
| Elaine | 8/10 | 6446 days | 18% |
| Gwen | 4/10 | 6449 days | 11% |
| Matt | 9/10 | 6453 days | 18% |
| Gillian | 6/10 | 6454 days | 15% |
| Lorraine | 6/10 | 6461 days | 15% |
| Jack | 5/10 | 6461 days | 13% |
| Jen | 6/10 | 6461 days | 15% |
| TrineLyst | 8/10 | 6462 days | 18% |
| Sean | 5/10 | 6465 days | 13% |
| Marcus | 7/10 | 6465 days | 17% |
| Katie | 7/10 | 6465 days | 17% |
| Dan | 8/10 | 6466 days | 18% |
| Sarah | 7/10 | 6466 days | 17% |
| Emma Gareth | 8/10 | 6477 days | 18% |
| MariaNorman | 8/10 | 6481 days | 18% |
| MarcHarris | 8/10 | 6481 days | 18% |
| Tom | 8/10 | 6490 days | 18% |
| Lucy | 9/10 | 6490 days | 18% |
| Nissa | 9/10 | 6490 days | 18% |
| Suzy | 7/10 | 6495 days | 17% |
| Nina | 6/10 | 6497 days | 15% |
| Inga | 5/10 | 6497 days | 13% |
| FredAndersson | 6/10 | 6501 days | 15% |
| Cat | 9/10 | 6503 days | 18% |
| SallySpencer | 3/10 | 6516 days | 9% |
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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
4.21% 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.