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 Mountain Helicopters.
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.
Mountain Helicopters
Valid Reviews
64 Valid Reviews
The Mountain Helicopters experience has a total of 68 reviews. There are 64 valid reviews that are included when calculating the ranking score and 4 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 64 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 53 |
|
83% |
| 9/10 | 7 |
|
11% |
| 8/10 | 3 |
|
5% |
| 7/10 | 0 |
|
0% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 1 |
|
2% |
| 1/10 | 0 |
|
0% |
96.72% Average
The raw data average (mean) for all the Mountain Helicopters valid reviews is 96.72% and is based on 64 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
19 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 64 valid reviews, the experience has 19 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 19 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 10 |
|
53% |
| 9/10 | 6 |
|
32% |
| 8/10 | 3 |
|
16% |
| 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% |
93.68% Average
The raw data average (mean) for all the Mountain Helicopters face-to-face reviews is 93.68% and is based on 19 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
98.88%
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 |
|---|---|---|---|
| Neil & Jan | 10/10 | 645 days | 100% |
| Julia T | 10/10 | 797 days | 84% |
| Gary Nicholls | 10/10 | 2288 days | 5% |
| Felicity Buckham | 10/10 | 2440 days | 5% |
| Tina Laughton | 2/10 | 2715 days | 2% |
| Pretorius Family | 10/10 | 2745 days | 4% |
| Bruce Phillips | 10/10 | 3017 days | 3% |
| Philipp Kulik | 10/10 | 3017 days | 3% |
| Lena | 9/10 | 3324 days | 2% |
| Nate Smith | 10/10 | 3382 days | 3% |
| John Jones | 10/10 | 3566 days | 2% |
| Natasha Walker | 10/10 | 3688 days | 2% |
| Richard Thompson | 10/10 | 3719 days | 2% |
| Tom Nicol | 10/10 | 3810 days | 1% |
| Ian Watson | 10/10 | 4022 days | 1% |
| Dorota Kimber | 10/10 | 4052 days | 1% |
| Luke Roberts | 10/10 | 4237 days | 0% |
| Glyn and Karen Farlow | 10/10 | 4314 days | 0% |
| Maria den Otter | 10/10 | 4356 days | 0% |
| Beverley Ceci | 10/10 | 4357 days | 0% |
| Henry Papuni | 10/10 | 4357 days | 0% |
| B D | 10/10 | 4357 days | 0% |
| Tracey Harrison | 10/10 | 4388 days | 1% |
| Zoe Heij | 10/10 | 4602 days | 1% |
| Franzyy | 10/10 | 4632 days | 1% |
| Margo Boyd | 10/10 | 4691 days | 1% |
| Dan | 10/10 | 4691 days | 1% |
| chrswdance | 10/10 | 4753 days | 1% |
| melemele | 10/10 | 4997 days | 1% |
| joeweiss | 10/10 | 5057 days | 1% |
| kiwifrenchy | 9/10 | 5057 days | 1% |
| MartinaCH | 10/10 | 5088 days | 1% |
| Marieke | 10/10 | 5119 days | 1% |
| dr_bc_gunther | 10/10 | 5241 days | 1% |
| Desma Frampton | 10/10 | 5376 days | 1% |
| Irene and Werner Keil | 10/10 | 5383 days | 1% |
| Farmer_sutra | 10/10 | 5394 days | 1% |
| Marleen Meyers | 8/10 | 5405 days | 1% |
| Dieter Uhlmann | 8/10 | 5405 days | 1% |
| cate | 10/10 | 5422 days | 1% |
| miscellanea4 | 10/10 | 5453 days | 1% |
| William_Symington | 10/10 | 5514 days | 1% |
| GaryHulst | 10/10 | 5575 days | 1% |
| jbchandler | 10/10 | 5698 days | 1% |
| Birgit Farwig | 10/10 | 5740 days | 1% |
| sirous21 | 10/10 | 5787 days | 1% |
| Keith Margan | 10/10 | 5787 days | 1% |
| Kevin and Teresa | 10/10 | 5787 days | 1% |
| middendorp | 9/10 | 5833 days | 1% |
| PatH | 9/10 | 5893 days | 1% |
| Eva Maria | 10/10 | 5940 days | 1% |
| regw | 10/10 | 5969 days | 1% |
| Andrea | 9/10 | 6013 days | 1% |
| Lilly Tillman | 10/10 | 6110 days | 1% |
| Gray | 9/10 | 6328 days | 1% |
| ashmann | 10/10 | 6422 days | 1% |
| George Jeffs | 10/10 | 6472 days | 1% |
| Ian and Judy | 9/10 | 6494 days | 1% |
| Susannah May | 10/10 | 6495 days | 1% |
| Victoria Manning | 10/10 | 6495 days | 1% |
| Wendy Lomas | 8/10 | 6502 days | 1% |
| Kathleen L | 10/10 | 6502 days | 1% |
| Paul Cripps | 10/10 | 6502 days | 1% |
| Petra | 10/10 | 6830 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 Mountain Helicopters experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Mountain Helicopters 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 Mountain Helicopters experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
0.45% 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.