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 Riverjet NZ.
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.
Riverjet NZ
Valid Reviews
65 Valid Reviews
The Riverjet NZ experience has a total of 66 reviews. There are 65 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 65 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 54 |
|
83% |
| 9/10 | 9 |
|
14% |
| 8/10 | 2 |
|
3% |
| 7/10 | 0 |
|
0% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
98.00% Average
The raw data average (mean) for all the Riverjet NZ valid reviews is 98.00% and is based on 65 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
9 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 65 valid reviews, the experience has 9 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 9 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 2 |
|
22% |
| 9/10 | 6 |
|
67% |
| 8/10 | 1 |
|
11% |
| 7/10 | 0 |
|
0% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
91.11% Average
The raw data average (mean) for all the Riverjet NZ face-to-face reviews is 91.11% and is based on 9 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
98.46%
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 |
|---|---|---|---|
| Stefan Zink | 10/10 | 3213 days | 70% |
| Mark Rosenberg | 10/10 | 3391 days | 85% |
| Josef Biller | 9/10 | 3600 days | 46% |
| Peter Bateman | 10/10 | 3605 days | 66% |
| Richard | 10/10 | 3635 days | 63% |
| Anna Herd | 10/10 | 3727 days | 55% |
| Rhonda McKinney | 10/10 | 3849 days | 45% |
| Dan Vaughan | 8/10 | 3969 days | 34% |
| Aida Azlan | 10/10 | 4000 days | 32% |
| Lisa Aitken | 10/10 | 4092 days | 24% |
| Joel Burken | 10/10 | 4215 days | 13% |
| Laina Black | 9/10 | 4306 days | 3% |
| Ricky White | 9/10 | 4306 days | 3% |
| Rob Van Proemeren | 10/10 | 4335 days | 3% |
| Phil & Tanya Thompson | 10/10 | 4366 days | 0% |
| Karrie Stephens | 10/10 | 4366 days | 0% |
| Jen Unsworth | 10/10 | 4397 days | 43% |
| Yumiko Kawano | 10/10 | 4427 days | 43% |
| Sabbsilein | 10/10 | 4458 days | 43% |
| PeterCollins | 10/10 | 4641 days | 43% |
| Bonnie and David Appleby | 9/10 | 4672 days | 43% |
| Rebecca | 10/10 | 4672 days | 43% |
| Cassandra Rakei | 10/10 | 4672 days | 43% |
| Courtney Quintrell | 9/10 | 4679 days | 30% |
| Katie Quantrell | 9/10 | 4700 days | 43% |
| johannesivarsson | 10/10 | 4731 days | 43% |
| jess | 10/10 | 4823 days | 43% |
| BrendaC | 10/10 | 4823 days | 43% |
| Jenn | 10/10 | 4823 days | 43% |
| kirstyrose | 10/10 | 4823 days | 43% |
| Sophie13 | 10/10 | 4945 days | 43% |
| pbau | 10/10 | 4976 days | 43% |
| TheHoon | 10/10 | 5006 days | 43% |
| Lisa Carey | 9/10 | 5023 days | 30% |
| dbr | 10/10 | 5037 days | 43% |
| Asha | 10/10 | 5097 days | 43% |
| shezabear | 10/10 | 5128 days | 43% |
| rach_taylor | 10/10 | 5158 days | 43% |
| lindahealey | 10/10 | 5158 days | 43% |
| someone | 10/10 | 5311 days | 43% |
| lisabraden | 10/10 | 5372 days | 43% |
| T Chapman | 9/10 | 5426 days | 30% |
| Lynnie | 9/10 | 5431 days | 43% |
| smegs | 10/10 | 5462 days | 43% |
| saramaria | 10/10 | 5523 days | 43% |
| adfc416 | 10/10 | 5523 days | 43% |
| UlsterOgre | 10/10 | 5523 days | 43% |
| Fred | 10/10 | 5615 days | 43% |
| fayz | 10/10 | 5646 days | 43% |
| sheppy99 | 10/10 | 5646 days | 43% |
| fdrspins | 10/10 | 5707 days | 43% |
| beans44 | 10/10 | 5796 days | 43% |
| Sue Pond | 10/10 | 6011 days | 43% |
| Di Christie | 10/10 | 6041 days | 43% |
| Towtz | 10/10 | 6072 days | 43% |
| ozpete | 10/10 | 6127 days | 43% |
| vanessa hateley | 10/10 | 6139 days | 43% |
| etb | 10/10 | 6150 days | 43% |
| Philip | 8/10 | 6151 days | 29% |
| emma weir | 10/10 | 6158 days | 43% |
| stuart and sue barnetson | 10/10 | 6353 days | 43% |
| Guilfords | 10/10 | 6354 days | 43% |
| Peter Lonsdale | 10/10 | 6467 days | 43% |
| Mie Toft Pedersen | 10/10 | 6498 days | 30% |
| Amanda McCaig | 10/10 | 6498 days | 43% |
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 Riverjet NZ experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.06% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Riverjet NZ 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 Riverjet NZ experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.00% |
| 198 | -4.02% |
| 199 | -4.04% |
| 200 | -4.06% |
| 201 | -4.08% |
| 202 | -4.10% |
| 203 | -4.12% |
| … | … |
Balancing Adjustment
0.49% 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
95%
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.