Hey, 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
88.55%
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 | 194 days | 100% |
| Izzy | 7/10 | 1959 days | 4% |
| Auba Mateos | 10/10 | 3062 days | 2% |
| May | 10/10 | 3128 days | 2% |
| Nathan Raymond | 4/10 | 3390 days | 1% |
| Raylene Luison | 8/10 | 3398 days | 1% |
| Tamara | 10/10 | 3423 days | 1% |
| Brennan Jungling | 8/10 | 3429 days | 1% |
| Anita Wallace | 9/10 | 3429 days | 1% |
| Linda and Gunther | 10/10 | 3465 days | 1% |
| Janek Belcher | 8/10 | 4099 days | 0% |
| Robert Erni | 7/10 | 4100 days | 0% |
| Vanessa | 8/10 | 4119 days | 0% |
| Olivia | 8/10 | 4134 days | 0% |
| Callum | 8/10 | 4134 days | 0% |
| David Lee | 8/10 | 4499 days | 1% |
| Thibault Bonenfant | 10/10 | 4583 days | 1% |
| Lisa Blake | 8/10 | 4593 days | 1% |
| Elisabeth | 10/10 | 4874 days | 1% |
| Asha | 7/10 | 4912 days | 0% |
| Mark & Beth Kaufman | 8/10 | 4947 days | 1% |
| Harry Simpson | 10/10 | 4950 days | 1% |
| kirribilliangel | 7/10 | 5034 days | 0% |
| Dave van Bergen | 8/10 | 5182 days | 1% |
| Jennifer Holloway | 9/10 | 5192 days | 1% |
| Julia | 10/10 | 5201 days | 1% |
| Isabell | 7/10 | 5206 days | 0% |
| Tim | 6/10 | 5208 days | 0% |
| WeddingMaven | 9/10 | 5218 days | 1% |
| Natthien Le Gall | 7/10 | 5219 days | 0% |
| Paap | 8/10 | 5223 days | 1% |
| Wouter Jansen | 8/10 | 5223 days | 1% |
| Kat Fleming | 9/10 | 5232 days | 1% |
| Invictus | 8/10 | 5399 days | 1% |
| heather Cardinal | 3/10 | 5538 days | 0% |
| Mathias Skov | 6/10 | 5597 days | 0% |
| jameswhite | 8/10 | 5665 days | 1% |
| asiacritics | 6/10 | 5673 days | 0% |
| nancyburns | 7/10 | 5673 days | 0% |
| Lesley Nixon | 4/10 | 5683 days | 0% |
| Ash Sturm | 10/10 | 5703 days | 1% |
| clairet | 7/10 | 5782 days | 0% |
| BryonyS | 10/10 | 5905 days | 1% |
| Sofie | 8/10 | 5917 days | 1% |
| desl | 10/10 | 5917 days | 1% |
| Steve Harper | 7/10 | 5924 days | 0% |
| Yvanna | 8/10 | 5936 days | 1% |
| LucyPoland | 9/10 | 5938 days | 1% |
| Amelie | 8/10 | 5938 days | 1% |
| OllyD | 7/10 | 5946 days | 0% |
| JessicaS1 | 9/10 | 5949 days | 1% |
| TomC1 | 8/10 | 5950 days | 1% |
| TrevorK | 8/10 | 5950 days | 1% |
| AndyK | 10/10 | 5950 days | 1% |
| SarahK | 10/10 | 5950 days | 1% |
| FrancesG | 8/10 | 5950 days | 1% |
| RachelR | 10/10 | 5950 days | 1% |
| SofiaBrazil | 8/10 | 5950 days | 1% |
| EmmaL | 10/10 | 5950 days | 1% |
| Sarah | 9/10 | 5953 days | 1% |
| Ed | 8/10 | 5953 days | 1% |
| Carmel | 10/10 | 5957 days | 1% |
| Amanda Williams | 10/10 | 5957 days | 1% |
| Cilla | 10/10 | 5958 days | 1% |
| MayGermany | 6/10 | 5959 days | 0% |
| Craig | 10/10 | 5974 days | 1% |
| Florian | 10/10 | 5974 days | 1% |
| SonjaS | 8/10 | 5976 days | 1% |
| Mimi | 10/10 | 5981 days | 1% |
| Jasmine | 10/10 | 5983 days | 1% |
| Rose | 7/10 | 5983 days | 0% |
| Liz | 7/10 | 5989 days | 0% |
| Bonnie Turner | 5/10 | 6007 days | 0% |
| Stephanie | 9/10 | 6017 days | 1% |
| Sonja | 6/10 | 6022 days | 0% |
| Helen | 7/10 | 6029 days | 0% |
| Liekens | 7/10 | 6037 days | 0% |
| Evelyn | 10/10 | 6051 days | 1% |
| Michelle | 7/10 | 6091 days | 0% |
| Chris | 10/10 | 6092 days | 1% |
| Dave | 8/10 | 6107 days | 1% |
| Anna | 10/10 | 6114 days | 1% |
| Ele | 10/10 | 6142 days | 1% |
| Brent Scanlan | 8/10 | 6259 days | 1% |
| Bernie | 9/10 | 6303 days | 1% |
| Emily Houston | 8/10 | 6314 days | 1% |
| Gina | 8/10 | 6326 days | 1% |
| Julie | 7/10 | 6326 days | 0% |
| Katharina | 9/10 | 6329 days | 1% |
| Chris | 4/10 | 6342 days | 0% |
| Andre Obineche | 8/10 | 6357 days | 1% |
| Clive | 7/10 | 6357 days | 0% |
| Lindsey Woosnam | 9/10 | 6360 days | 1% |
| Anu | 5/10 | 6363 days | 0% |
| Lanni | 7/10 | 6364 days | 0% |
| Andrew | 8/10 | 6364 days | 1% |
| Andrew Porter | 6/10 | 6365 days | 0% |
| Pete | 7/10 | 6406 days | 0% |
| Orla | 6/10 | 6407 days | 0% |
| Richard Kindgren | 7/10 | 6409 days | 0% |
| Miriam&Eva | 6/10 | 6607 days | 0% |
| HalRoberts | 7/10 | 6629 days | 0% |
| Will | 8/10 | 6633 days | 1% |
| Helen | 9/10 | 6635 days | 1% |
| Heather | 10/10 | 6635 days | 1% |
| Matt | 8/10 | 6635 days | 1% |
| Richard | 7/10 | 6635 days | 0% |
| ShoshanaAbrams | 9/10 | 6638 days | 1% |
| Elaine | 8/10 | 6638 days | 1% |
| Gwen | 4/10 | 6641 days | 0% |
| Matt | 9/10 | 6645 days | 1% |
| Gillian | 6/10 | 6646 days | 0% |
| Lorraine | 6/10 | 6653 days | 0% |
| Jack | 5/10 | 6653 days | 0% |
| Jen | 6/10 | 6653 days | 0% |
| TrineLyst | 8/10 | 6654 days | 1% |
| Sean | 5/10 | 6657 days | 0% |
| Marcus | 7/10 | 6657 days | 0% |
| Katie | 7/10 | 6657 days | 0% |
| Dan | 8/10 | 6658 days | 1% |
| Sarah | 7/10 | 6658 days | 0% |
| Emma Gareth | 8/10 | 6669 days | 1% |
| MariaNorman | 8/10 | 6673 days | 1% |
| MarcHarris | 8/10 | 6673 days | 1% |
| Tom | 8/10 | 6682 days | 1% |
| Lucy | 9/10 | 6682 days | 1% |
| Nissa | 9/10 | 6682 days | 1% |
| Suzy | 7/10 | 6687 days | 0% |
| Nina | 6/10 | 6689 days | 0% |
| Inga | 5/10 | 6689 days | 0% |
| FredAndersson | 6/10 | 6693 days | 0% |
| Cat | 9/10 | 6695 days | 1% |
| SallySpencer | 3/10 | 6708 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
-1.99% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 114 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 177 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 174 | -1.96% |
| 175 | -1.97% |
| 176 | -1.98% |
| 177 | -1.99% |
| 178 | -2.00% |
| 179 | -2.01% |
| 180 | -2.02% |
| … | … |
Balancing Adjustment
1.53% 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.