G'day, 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
88.60%
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 | 52 days | 100% |
| Izzy | 7/10 | 1817 days | 5% |
| Auba Mateos | 10/10 | 2920 days | 3% |
| May | 10/10 | 2986 days | 3% |
| Nathan Raymond | 4/10 | 3248 days | 1% |
| Raylene Luison | 8/10 | 3256 days | 2% |
| Tamara | 10/10 | 3281 days | 2% |
| Brennan Jungling | 8/10 | 3287 days | 2% |
| Anita Wallace | 9/10 | 3287 days | 2% |
| Linda and Gunther | 10/10 | 3323 days | 2% |
| Janek Belcher | 8/10 | 3957 days | 1% |
| Robert Erni | 7/10 | 3958 days | 1% |
| Vanessa | 8/10 | 3977 days | 1% |
| Olivia | 8/10 | 3992 days | 1% |
| Callum | 8/10 | 3992 days | 1% |
| David Lee | 8/10 | 4357 days | 0% |
| Thibault Bonenfant | 10/10 | 4441 days | 1% |
| Lisa Blake | 8/10 | 4451 days | 1% |
| Elisabeth | 10/10 | 4732 days | 1% |
| Asha | 7/10 | 4770 days | 1% |
| Mark & Beth Kaufman | 8/10 | 4805 days | 1% |
| Harry Simpson | 10/10 | 4808 days | 1% |
| kirribilliangel | 7/10 | 4892 days | 1% |
| Dave van Bergen | 8/10 | 5040 days | 1% |
| Jennifer Holloway | 9/10 | 5050 days | 1% |
| Julia | 10/10 | 5059 days | 1% |
| Isabell | 7/10 | 5064 days | 1% |
| Tim | 6/10 | 5066 days | 1% |
| WeddingMaven | 9/10 | 5076 days | 1% |
| Natthien Le Gall | 7/10 | 5077 days | 1% |
| Paap | 8/10 | 5081 days | 1% |
| Wouter Jansen | 8/10 | 5081 days | 1% |
| Kat Fleming | 9/10 | 5090 days | 1% |
| Invictus | 8/10 | 5257 days | 1% |
| heather Cardinal | 3/10 | 5396 days | 1% |
| Mathias Skov | 6/10 | 5455 days | 1% |
| jameswhite | 8/10 | 5523 days | 1% |
| asiacritics | 6/10 | 5531 days | 1% |
| nancyburns | 7/10 | 5531 days | 1% |
| Lesley Nixon | 4/10 | 5541 days | 1% |
| Ash Sturm | 10/10 | 5561 days | 1% |
| clairet | 7/10 | 5640 days | 1% |
| BryonyS | 10/10 | 5763 days | 1% |
| Sofie | 8/10 | 5775 days | 1% |
| desl | 10/10 | 5775 days | 1% |
| Steve Harper | 7/10 | 5782 days | 1% |
| Yvanna | 8/10 | 5794 days | 1% |
| LucyPoland | 9/10 | 5796 days | 1% |
| Amelie | 8/10 | 5796 days | 1% |
| OllyD | 7/10 | 5804 days | 1% |
| JessicaS1 | 9/10 | 5807 days | 1% |
| TomC1 | 8/10 | 5808 days | 1% |
| TrevorK | 8/10 | 5808 days | 1% |
| AndyK | 10/10 | 5808 days | 1% |
| SarahK | 10/10 | 5808 days | 1% |
| FrancesG | 8/10 | 5808 days | 1% |
| RachelR | 10/10 | 5808 days | 1% |
| SofiaBrazil | 8/10 | 5808 days | 1% |
| EmmaL | 10/10 | 5808 days | 1% |
| Sarah | 9/10 | 5811 days | 1% |
| Ed | 8/10 | 5811 days | 1% |
| Carmel | 10/10 | 5815 days | 1% |
| Amanda Williams | 10/10 | 5815 days | 1% |
| Cilla | 10/10 | 5816 days | 1% |
| MayGermany | 6/10 | 5817 days | 1% |
| Craig | 10/10 | 5832 days | 1% |
| Florian | 10/10 | 5832 days | 1% |
| SonjaS | 8/10 | 5834 days | 1% |
| Mimi | 10/10 | 5839 days | 1% |
| Jasmine | 10/10 | 5841 days | 1% |
| Rose | 7/10 | 5841 days | 1% |
| Liz | 7/10 | 5847 days | 1% |
| Bonnie Turner | 5/10 | 5865 days | 1% |
| Stephanie | 9/10 | 5875 days | 1% |
| Sonja | 6/10 | 5879 days | 1% |
| Helen | 7/10 | 5887 days | 1% |
| Liekens | 7/10 | 5895 days | 1% |
| Evelyn | 10/10 | 5909 days | 1% |
| Michelle | 7/10 | 5949 days | 1% |
| Chris | 10/10 | 5950 days | 1% |
| Dave | 8/10 | 5965 days | 1% |
| Anna | 10/10 | 5972 days | 1% |
| Ele | 10/10 | 6000 days | 1% |
| Brent Scanlan | 8/10 | 6117 days | 1% |
| Bernie | 9/10 | 6161 days | 1% |
| Emily Houston | 8/10 | 6172 days | 1% |
| Gina | 8/10 | 6184 days | 1% |
| Julie | 7/10 | 6184 days | 1% |
| Katharina | 9/10 | 6187 days | 1% |
| Chris | 4/10 | 6200 days | 1% |
| Andre Obineche | 8/10 | 6215 days | 1% |
| Clive | 7/10 | 6215 days | 1% |
| Lindsey Woosnam | 9/10 | 6218 days | 1% |
| Anu | 5/10 | 6221 days | 1% |
| Lanni | 7/10 | 6222 days | 1% |
| Andrew | 8/10 | 6222 days | 1% |
| Andrew Porter | 6/10 | 6223 days | 1% |
| Pete | 7/10 | 6264 days | 1% |
| Orla | 6/10 | 6265 days | 1% |
| Richard Kindgren | 7/10 | 6267 days | 1% |
| Miriam&Eva | 6/10 | 6465 days | 1% |
| HalRoberts | 7/10 | 6487 days | 1% |
| Will | 8/10 | 6491 days | 1% |
| Helen | 9/10 | 6493 days | 1% |
| Heather | 10/10 | 6493 days | 1% |
| Matt | 8/10 | 6493 days | 1% |
| Richard | 7/10 | 6493 days | 1% |
| ShoshanaAbrams | 9/10 | 6496 days | 1% |
| Elaine | 8/10 | 6496 days | 1% |
| Gwen | 4/10 | 6499 days | 1% |
| Matt | 9/10 | 6503 days | 1% |
| Gillian | 6/10 | 6504 days | 1% |
| Lorraine | 6/10 | 6511 days | 1% |
| Jack | 5/10 | 6511 days | 1% |
| Jen | 6/10 | 6511 days | 1% |
| TrineLyst | 8/10 | 6512 days | 1% |
| Sean | 5/10 | 6515 days | 1% |
| Marcus | 7/10 | 6515 days | 1% |
| Katie | 7/10 | 6515 days | 1% |
| Dan | 8/10 | 6516 days | 1% |
| Sarah | 7/10 | 6516 days | 1% |
| Emma Gareth | 8/10 | 6527 days | 1% |
| MariaNorman | 8/10 | 6531 days | 1% |
| MarcHarris | 8/10 | 6531 days | 1% |
| Tom | 8/10 | 6540 days | 1% |
| Lucy | 9/10 | 6540 days | 1% |
| Nissa | 9/10 | 6540 days | 1% |
| Suzy | 7/10 | 6545 days | 1% |
| Nina | 6/10 | 6547 days | 1% |
| Inga | 5/10 | 6547 days | 1% |
| FredAndersson | 6/10 | 6551 days | 1% |
| Cat | 9/10 | 6553 days | 1% |
| SallySpencer | 3/10 | 6566 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
-0.70% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 47 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 34 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 31 | -0.64% |
| 32 | -0.66% |
| 33 | -0.68% |
| 34 | -0.70% |
| 35 | -0.72% |
| 36 | -0.74% |
| 37 | -0.76% |
| … | … |
Balancing Adjustment
1.31% 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
89%
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.