Ranking Score Explained
Hi there, 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.
Nick Morrison
Rankers owner
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
98.20%
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 | Face-to-Face | Weight | Relative Weight |
|---|---|---|---|---|---|
| Stefan Zink | 10/10 | 451 days |  |
81.32 | 100% |
| Mark Rosenberg | 10/10 | 630 days | 39.26 | 47% | |
| Josef Biller | 9/10 | 838 days | |
18.56 | 21% |
| Peter Bateman | 10/10 | 843 days | 15.06 | 17% | |
| Richard | 10/10 | 874 days | 12.74 | 14% | |
| Anna Herd | 10/10 | 966 days | 7.64 | 8% | |
| Rhonda McKinney | 10/10 | 1088 days | 5.01 | 5% | |
| Dan Vaughan | 8/10 | 1208 days | 4.85 | 4% | |
| Aida Azlan | 10/10 | 1239 days | 4.8 | 4% | |
| Lisa Aitken | 10/10 | 1331 days | 4.68 | 4% | |
| Joel Burken | 10/10 | 1453 days | 4.51 | 4% | |
| Laina Black | 9/10 | 1544 days | |
5.26 | 5% |
| Ricky White | 9/10 | 1544 days | |
5.26 | 5% |
| Rob Van Proemeren | 10/10 | 1573 days | 4.35 | 4% | |
| Phil & Tanya Thompson | 10/10 | 1604 days | 4.3 | 4% | |
| Karrie Stephens | 10/10 | 1604 days | 4.3 | 4% | |
| Jen Unsworth | 10/10 | 1635 days | 4.26 | 4% | |
| Yumiko Kawano | 10/10 | 1665 days | 4.22 | 4% | |
| Sabbsilein | 10/10 | 1696 days | 4.18 | 3% | |
| PeterCollins | 10/10 | 1879 days | 3.93 | 3% | |
| Bonnie and David Appleby | 9/10 | 1910 days | 3.88 | 3% | |
| Rebecca | 10/10 | 1910 days | 3.88 | 3% | |
| Cassandra Rakei | 10/10 | 1910 days | 3.88 | 3% | |
| Courtney Quintrell | 9/10 | 1917 days | |
4.65 | 4% |
| Katie Quantrell | 9/10 | 1938 days | 3.85 | 3% | |
| johannesivarsson | 10/10 | 1969 days | 3.8 | 3% | |
| jess | 10/10 | 2061 days | 3.68 | 3% | |
| BrendaC | 10/10 | 2061 days | 3.68 | 3% | |
| Jenn | 10/10 | 2061 days | 3.68 | 3% | |
| kirstyrose | 10/10 | 2061 days | 3.68 | 3% | |
| Sophie13 | 10/10 | 2183 days | 3.51 | 3% | |
| pbau | 10/10 | 2214 days | 3.47 | 3% | |
| TheHoon | 10/10 | 2244 days | 3.43 | 3% | |
| Lisa Carey | 9/10 | 2261 days | |
4.08 | 3% |
| dbr | 10/10 | 2275 days | 3.38 | 3% | |
| Asha | 10/10 | 2335 days | 3.3 | 2% | |
| shezabear | 10/10 | 2366 days | 3.26 | 2% | |
| rach_taylor | 10/10 | 2396 days | 3.22 | 2% | |
| lindahealey | 10/10 | 2396 days | 3.22 | 2% | |
| someone | 10/10 | 2549 days | 3.01 | 2% | |
| lisabraden | 10/10 | 2610 days | 2.92 | 2% | |
| T Chapman | 9/10 | 2664 days | |
3.42 | 3% |
| Lynnie | 9/10 | 2669 days | 2.84 | 2% | |
| smegs | 10/10 | 2700 days | 2.8 | 2% | |
| saramaria | 10/10 | 2761 days | 2.72 | 2% | |
| adfc416 | 10/10 | 2761 days | 2.72 | 2% | |
| UlsterOgre | 10/10 | 2761 days | 2.72 | 2% | |
| Fred | 10/10 | 2853 days | 2.59 | 2% | |
| fayz | 10/10 | 2884 days | 2.55 | 1% | |
| sheppy99 | 10/10 | 2884 days | 2.55 | 1% | |
| fdrspins | 10/10 | 2945 days | 2.47 | 1% | |
| beans44 | 10/10 | 3034 days | 2.34 | 1% | |
| Sue Pond | 10/10 | 3249 days | 2.05 | 1% | |
| Di Christie | 10/10 | 3279 days | 2.01 | 1% | |
| Towtz | 10/10 | 3310 days | 1.97 | 1% | |
| ozpete | 10/10 | 3365 days | 1.89 | 1% | |
| vanessa hateley | 10/10 | 3377 days | 1.87 | 1% | |
| etb | 10/10 | 3388 days | 1.86 | 1% | |
| Philip | 8/10 | 3389 days | |
2.23 | 1% |
| emma weir | 10/10 | 3397 days | 1.85 | 1% | |
| stuart and sue barnetson | 10/10 | 3591 days | 1.58 | 0% | |
| Guilfords | 10/10 | 3592 days | 1.58 | 0% | |
| Peter Lonsdale | 10/10 | 3705 days | 1.42 | 0% | |
| Mie Toft Pedersen | 10/10 | 3736 days | |
1.66 | 0% |
| Amanda McCaig | 10/10 | 3736 days | 1.38 | 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 Riverjet NZ experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-6.76% Adjustment
There may be an adjustment if an experience hasn't received any reviews within the last 60 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 364 days.
The Riverjet NZ experience has been adjusted for 338 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 335 | -6.70% |
| 336 | -6.72% |
| 337 | -6.74% |
| 338 | -6.76% |
| 339 | -6.78% |
| 340 | -6.80% |
| 341 | -6.82% |
| … | … |
Final Ranking Score
91%
The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.