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
88.36%
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 | 369 days | 100% |
| Izzy | 7/10 | 2134 days | 4% |
| Auba Mateos | 10/10 | 3237 days | 2% |
| May | 10/10 | 3303 days | 2% |
| Nathan Raymond | 4/10 | 3565 days | 1% |
| Raylene Luison | 8/10 | 3573 days | 2% |
| Tamara | 10/10 | 3598 days | 2% |
| Brennan Jungling | 8/10 | 3604 days | 1% |
| Anita Wallace | 9/10 | 3604 days | 1% |
| Linda and Gunther | 10/10 | 3640 days | 1% |
| Janek Belcher | 8/10 | 4274 days | 0% |
| Robert Erni | 7/10 | 4275 days | 0% |
| Vanessa | 8/10 | 4294 days | 0% |
| Olivia | 8/10 | 4309 days | 0% |
| Callum | 8/10 | 4309 days | 0% |
| David Lee | 8/10 | 4674 days | 1% |
| Thibault Bonenfant | 10/10 | 4758 days | 1% |
| Lisa Blake | 8/10 | 4768 days | 1% |
| Elisabeth | 10/10 | 5049 days | 1% |
| Asha | 7/10 | 5087 days | 1% |
| Mark & Beth Kaufman | 8/10 | 5122 days | 1% |
| Harry Simpson | 10/10 | 5125 days | 1% |
| kirribilliangel | 7/10 | 5209 days | 1% |
| Dave van Bergen | 8/10 | 5357 days | 1% |
| Jennifer Holloway | 9/10 | 5367 days | 1% |
| Julia | 10/10 | 5376 days | 1% |
| Isabell | 7/10 | 5381 days | 1% |
| Tim | 6/10 | 5383 days | 1% |
| WeddingMaven | 9/10 | 5393 days | 1% |
| Natthien Le Gall | 7/10 | 5394 days | 1% |
| Paap | 8/10 | 5398 days | 1% |
| Wouter Jansen | 8/10 | 5398 days | 1% |
| Kat Fleming | 9/10 | 5407 days | 1% |
| Invictus | 8/10 | 5574 days | 1% |
| heather Cardinal | 3/10 | 5713 days | 0% |
| Mathias Skov | 6/10 | 5772 days | 1% |
| jameswhite | 8/10 | 5840 days | 1% |
| asiacritics | 6/10 | 5848 days | 1% |
| nancyburns | 7/10 | 5848 days | 1% |
| Lesley Nixon | 4/10 | 5858 days | 1% |
| Ash Sturm | 10/10 | 5878 days | 1% |
| clairet | 7/10 | 5957 days | 1% |
| BryonyS | 10/10 | 6080 days | 1% |
| Sofie | 8/10 | 6092 days | 1% |
| desl | 10/10 | 6092 days | 1% |
| Steve Harper | 7/10 | 6099 days | 1% |
| Yvanna | 8/10 | 6111 days | 1% |
| LucyPoland | 9/10 | 6113 days | 1% |
| Amelie | 8/10 | 6113 days | 1% |
| OllyD | 7/10 | 6121 days | 1% |
| JessicaS1 | 9/10 | 6124 days | 1% |
| TomC1 | 8/10 | 6125 days | 1% |
| TrevorK | 8/10 | 6125 days | 1% |
| AndyK | 10/10 | 6125 days | 1% |
| SarahK | 10/10 | 6125 days | 1% |
| FrancesG | 8/10 | 6125 days | 1% |
| RachelR | 10/10 | 6125 days | 1% |
| SofiaBrazil | 8/10 | 6125 days | 1% |
| EmmaL | 10/10 | 6125 days | 1% |
| Sarah | 9/10 | 6129 days | 1% |
| Ed | 8/10 | 6129 days | 1% |
| Carmel | 10/10 | 6132 days | 1% |
| Amanda Williams | 10/10 | 6133 days | 1% |
| Cilla | 10/10 | 6134 days | 1% |
| MayGermany | 6/10 | 6134 days | 1% |
| Craig | 10/10 | 6149 days | 1% |
| Florian | 10/10 | 6149 days | 1% |
| SonjaS | 8/10 | 6151 days | 1% |
| Mimi | 10/10 | 6157 days | 1% |
| Jasmine | 10/10 | 6158 days | 1% |
| Rose | 7/10 | 6158 days | 1% |
| Liz | 7/10 | 6164 days | 1% |
| Bonnie Turner | 5/10 | 6182 days | 1% |
| Stephanie | 9/10 | 6192 days | 1% |
| Sonja | 6/10 | 6197 days | 1% |
| Helen | 7/10 | 6205 days | 1% |
| Liekens | 7/10 | 6213 days | 1% |
| Evelyn | 10/10 | 6227 days | 1% |
| Michelle | 7/10 | 6267 days | 1% |
| Chris | 10/10 | 6267 days | 1% |
| Dave | 8/10 | 6282 days | 1% |
| Anna | 10/10 | 6290 days | 1% |
| Ele | 10/10 | 6317 days | 1% |
| Brent Scanlan | 8/10 | 6434 days | 1% |
| Bernie | 9/10 | 6478 days | 1% |
| Emily Houston | 8/10 | 6489 days | 1% |
| Gina | 8/10 | 6501 days | 1% |
| Julie | 7/10 | 6501 days | 1% |
| Katharina | 9/10 | 6504 days | 1% |
| Chris | 4/10 | 6517 days | 1% |
| Andre Obineche | 8/10 | 6532 days | 1% |
| Clive | 7/10 | 6532 days | 1% |
| Lindsey Woosnam | 9/10 | 6535 days | 1% |
| Anu | 5/10 | 6538 days | 1% |
| Lanni | 7/10 | 6539 days | 1% |
| Andrew | 8/10 | 6539 days | 1% |
| Andrew Porter | 6/10 | 6540 days | 1% |
| Pete | 7/10 | 6581 days | 1% |
| Orla | 6/10 | 6582 days | 1% |
| Richard Kindgren | 7/10 | 6584 days | 1% |
| Miriam&Eva | 6/10 | 6782 days | 1% |
| HalRoberts | 7/10 | 6804 days | 1% |
| Will | 8/10 | 6808 days | 1% |
| Helen | 9/10 | 6810 days | 1% |
| Heather | 10/10 | 6810 days | 1% |
| Matt | 8/10 | 6810 days | 1% |
| Richard | 7/10 | 6810 days | 1% |
| ShoshanaAbrams | 9/10 | 6813 days | 1% |
| Elaine | 8/10 | 6813 days | 1% |
| Gwen | 4/10 | 6816 days | 1% |
| Matt | 9/10 | 6820 days | 1% |
| Gillian | 6/10 | 6821 days | 1% |
| Lorraine | 6/10 | 6828 days | 1% |
| Jack | 5/10 | 6828 days | 1% |
| Jen | 6/10 | 6828 days | 1% |
| TrineLyst | 8/10 | 6829 days | 1% |
| Sean | 5/10 | 6832 days | 1% |
| Marcus | 7/10 | 6832 days | 1% |
| Katie | 7/10 | 6832 days | 1% |
| Dan | 8/10 | 6833 days | 1% |
| Sarah | 7/10 | 6833 days | 1% |
| Emma Gareth | 8/10 | 6844 days | 1% |
| MariaNorman | 8/10 | 6848 days | 1% |
| MarcHarris | 8/10 | 6848 days | 1% |
| Tom | 8/10 | 6857 days | 1% |
| Lucy | 9/10 | 6857 days | 1% |
| Nissa | 9/10 | 6857 days | 1% |
| Suzy | 7/10 | 6862 days | 1% |
| Nina | 6/10 | 6864 days | 1% |
| Inga | 5/10 | 6864 days | 1% |
| FredAndersson | 6/10 | 6868 days | 1% |
| Cat | 9/10 | 6870 days | 1% |
| SallySpencer | 3/10 | 6883 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
-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
1.97% 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.