Hi, 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 Spellbound Ltd.
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.
Spellbound Ltd
Valid Reviews
132 Valid Reviews
The Spellbound Ltd experience has a total of 138 reviews. There are 132 valid reviews that are included when calculating the ranking score and 6 invalid reviews 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 | 83 |
|
63% |
| 9/10 | 30 |
|
23% |
| 8/10 | 12 |
|
9% |
| 7/10 | 5 |
|
4% |
| 6/10 | 2 |
|
2% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
94.17% Average
The raw data average (mean) for all the Spellbound Ltd valid reviews is 94.17% 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
52 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 52 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 52 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 16 |
|
31% |
| 9/10 | 20 |
|
38% |
| 8/10 | 10 |
|
19% |
| 7/10 | 5 |
|
10% |
| 6/10 | 1 |
|
2% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
88.65% Average
The raw data average (mean) for all the Spellbound Ltd face-to-face reviews is 88.65% and is based on 52 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
96.59%
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 |
|---|---|---|---|
| Moira and Tom | 10/10 | 1737 days | 100% |
| Kylee Langdon | 9/10 | 1737 days | 99% |
| Nikki Bristol | 10/10 | 1768 days | 95% |
| shelagh gastrell | 10/10 | 1768 days | 95% |
| Clive Williams | 10/10 | 1829 days | 91% |
| Robin Mooring | 10/10 | 1829 days | 91% |
| Paddy O\\\'Connor | 9/10 | 1829 days | 90% |
| Liz Wade | 10/10 | 1857 days | 90% |
| Trevor | 10/10 | 1858 days | 90% |
| Linda | 10/10 | 1889 days | 89% |
| Pukerooster | 10/10 | 1889 days | 89% |
| T Alan Hatton | 10/10 | 1920 days | 88% |
| Emile | 10/10 | 1950 days | 87% |
| GODARD Tuatini | 10/10 | 1981 days | 86% |
| Ella | 10/10 | 1981 days | 86% |
| Sarah & Paul | 10/10 | 1981 days | 86% |
| Mary | 10/10 | 2042 days | 83% |
| Ricardo Nigro | 10/10 | 2134 days | 80% |
| beryl maehe rogers | 10/10 | 2164 days | 79% |
| Carlos Madrid | 9/10 | 2164 days | 78% |
| maryann de la haye | 10/10 | 2164 days | 79% |
| Kris | 10/10 | 2195 days | 78% |
| Jean-Martial MARENNE | 10/10 | 2195 days | 78% |
| Eleri | 10/10 | 2195 days | 78% |
| Richard Taylor | 10/10 | 2223 days | 77% |
| Jenny Hume | 10/10 | 2254 days | 75% |
| Ollie Bigelow | 10/10 | 2315 days | 73% |
| Kristine | 10/10 | 2315 days | 73% |
| Bill Lyon | 10/10 | 2315 days | 73% |
| Rob & Jan | 10/10 | 2315 days | 73% |
| geex25@gmail.com | 8/10 | 2315 days | 72% |
| Alex | 10/10 | 2346 days | 72% |
| Tara Holmes | 10/10 | 2346 days | 72% |
| Marg | 10/10 | 2346 days | 72% |
| Annette and Jan | 10/10 | 2346 days | 72% |
| Vanesa De la haza | 10/10 | 2376 days | 71% |
| Judy | 10/10 | 2376 days | 71% |
| Emanda | 10/10 | 2376 days | 71% |
| Mary | 10/10 | 2376 days | 71% |
| Paul from Australia | 10/10 | 2499 days | 66% |
| Brad, California | 10/10 | 2560 days | 64% |
| Sarah Killury | 10/10 | 2587 days | 63% |
| Kristin Svensson | 10/10 | 2618 days | 62% |
| Javier Mimbrera | 10/10 | 2740 days | 57% |
| Dave Rollison | 9/10 | 2924 days | 50% |
| Judit Van lanen | 9/10 | 3002 days | 42% |
| Thomas Nolwenn | 7/10 | 3050 days | 37% |
| Jilly Crew | 10/10 | 3105 days | 44% |
| Cj Bloomfield | 10/10 | 3228 days | 39% |
| Stephan Kirchenbaur | 8/10 | 3285 days | 32% |
| Eline Meijer | 7/10 | 3362 days | 27% |
| Ruth P | 10/10 | 3380 days | 33% |
| villemain pascale | 10/10 | 3411 days | 32% |
| Shelley Adderley | 10/10 | 3441 days | 31% |
| Niko Stange | 10/10 | 3624 days | 24% |
| Abi Fielder | 10/10 | 3683 days | 22% |
| MARYSE DUMAS | 9/10 | 3714 days | 20% |
| Karen Hale | 8/10 | 3714 days | 20% |
| Erik Hafuer | 10/10 | 3724 days | 18% |
| Bram and Laura | 9/10 | 3746 days | 17% |
| Polly Rider | 9/10 | 3750 days | 17% |
| Kyle S | 10/10 | 3806 days | 17% |
| Simon Mehlmann | 10/10 | 3998 days | 9% |
| Astrid | 10/10 | 4021 days | 9% |
| Miriam Grund | 8/10 | 4025 days | 7% |
| Brian | 9/10 | 4141 days | 5% |
| Martin & Carol | 10/10 | 4172 days | 3% |
| Christine & Andrew | 9/10 | 4264 days | 0% |
| Bonnie and David Appleby | 10/10 | 4386 days | 15% |
| Rob Walker | 10/10 | 4386 days | 15% |
| Brigitte | 9/10 | 4464 days | 13% |
| Andreas Garbin | 10/10 | 4464 days | 13% |
| cmhamlin | 10/10 | 4476 days | 15% |
| Fam von Hattem | 9/10 | 4488 days | 13% |
| Bodil Andersen | 10/10 | 4491 days | 13% |
| phudgb | 10/10 | 4537 days | 15% |
| Lukea | 10/10 | 4720 days | 15% |
| Huw Davies | 9/10 | 4726 days | 13% |
| Lisa Carey | 9/10 | 4737 days | 13% |
| Michael Touzer | 9/10 | 4746 days | 13% |
| Lucy Wilde | 9/10 | 4754 days | 13% |
| Miina Hyuonen | 8/10 | 4762 days | 13% |
| Dieter Mangold | 10/10 | 4763 days | 13% |
| Preben vil Helmsen | 10/10 | 4763 days | 13% |
| Rachel | 7/10 | 4765 days | 12% |
| Christian Apfel | 9/10 | 4768 days | 13% |
| Elizabeth Gardner | 9/10 | 4772 days | 13% |
| Fleur & Nils | 9/10 | 4773 days | 13% |
| kiwiconvert | 10/10 | 4780 days | 15% |
| ivanovskyv | 10/10 | 4811 days | 15% |
| Willem & Lilian | 9/10 | 4851 days | 13% |
| Lardy | 8/10 | 4859 days | 13% |
| piseagalba | 10/10 | 4872 days | 15% |
| katel86 | 10/10 | 4933 days | 15% |
| shelleyp | 10/10 | 5056 days | 15% |
| bdel1963 | 10/10 | 5056 days | 15% |
| Geoff Shutt | 9/10 | 5056 days | 15% |
| Ralph & Marloes Meyers | 8/10 | 5085 days | 13% |
| Helen Evans | 7/10 | 5100 days | 12% |
| Binder | 6/10 | 5101 days | 10% |
| Monica | 8/10 | 5113 days | 13% |
| Vincent | 9/10 | 5121 days | 13% |
| Kurmann/Kayser | 9/10 | 5123 days | 13% |
| Pascal | 9/10 | 5135 days | 13% |
| Kris | 10/10 | 5135 days | 13% |
| Sprangers | 9/10 | 5138 days | 13% |
| ianbateup | 10/10 | 5145 days | 15% |
| Lance | 10/10 | 5237 days | 15% |
| Papu | 10/10 | 5237 days | 15% |
| marisraneth | 8/10 | 5451 days | 13% |
| john england | 10/10 | 5482 days | 15% |
| Mary Selfa | 10/10 | 5506 days | 13% |
| snodge | 9/10 | 5510 days | 15% |
| PaulR | 10/10 | 5541 days | 15% |
| Thomas Rust | 10/10 | 5576 days | 13% |
| SBlake | 10/10 | 5821 days | 13% |
| KathM | 8/10 | 5832 days | 13% |
| ToyalFrance | 10/10 | 5836 days | 13% |
| Donna | 10/10 | 5841 days | 13% |
| PeterG | 9/10 | 5849 days | 13% |
| NicoleG | 8/10 | 5849 days | 13% |
| ReneeA | 9/10 | 5864 days | 13% |
| Ans | 8/10 | 5889 days | 13% |
| Marga V | 10/10 | 5928 days | 15% |
| mehunt | 9/10 | 5928 days | 15% |
| lming60 | 6/10 | 5941 days | 12% |
| Bryony Wilson | 9/10 | 6196 days | 13% |
| Buys | 7/10 | 6221 days | 12% |
| Carole Roccia | 10/10 | 6257 days | 13% |
| Valeria Barouch | 10/10 | 6298 days | 13% |
| Katherine | 10/10 | 6572 days | 13% |
| Nissa | 10/10 | 6581 days | 13% |
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 Spellbound Ltd experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.09% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 55 days. However the Spellbound Ltd 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 Spellbound Ltd experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.03% |
| 198 | -4.05% |
| 199 | -4.07% |
| 200 | -4.09% |
| 201 | -4.11% |
| 202 | -4.13% |
| 203 | -4.15% |
| … | … |
Balancing Adjustment
0.69% 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
93%
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.