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 Driving Creek Railway & Potteries.
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.
Driving Creek Railway & Potteries
Valid Reviews
92 Valid Reviews
The Driving Creek Railway & Potteries experience has a total of 93 reviews. There are 92 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 92 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 31 |
|
34% |
| 9/10 | 20 |
|
22% |
| 8/10 | 25 |
|
27% |
| 7/10 | 8 |
|
9% |
| 6/10 | 1 |
|
1% |
| 5/10 | 4 |
|
4% |
| 4/10 | 2 |
|
2% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
85.11% Average
The raw data average (mean) for all the Driving Creek Railway & Potteries valid reviews is 85.11% and is based on 92 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
81 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 92 valid reviews, the experience has 81 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 81 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 27 |
|
33% |
| 9/10 | 18 |
|
22% |
| 8/10 | 22 |
|
27% |
| 7/10 | 7 |
|
9% |
| 6/10 | 1 |
|
1% |
| 5/10 | 3 |
|
4% |
| 4/10 | 2 |
|
2% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
85.06% Average
The raw data average (mean) for all the Driving Creek Railway & Potteries face-to-face reviews is 85.06% and is based on 81 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
86.12%
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 |
|---|---|---|---|
| Richard Webb | 10/10 | 2860 days | 100% |
| Colin George | 10/10 | 2910 days | 97% |
| Vanuxem | 3/10 | 3157 days | 44% |
| Camilla Geert | 5/10 | 3167 days | 61% |
| Manibod Vannaphone | 8/10 | 3184 days | 77% |
| Stephan Friedrich | 10/10 | 3204 days | 77% |
| Frank | 8/10 | 3216 days | 75% |
| Tatiana Racheneau | 10/10 | 3230 days | 76% |
| Liz and Alan Weathers | 8/10 | 3590 days | 51% |
| Phil Bromby | 10/10 | 3915 days | 30% |
| Helen | 10/10 | 3918 days | 30% |
| Jonas Nielsen | 4/10 | 3924 days | 19% |
| Karel | 9/10 | 3934 days | 29% |
| FlyingKiwiGirl | 8/10 | 4283 days | 6% |
| Emmanuel Tedeschi | 7/10 | 4285 days | 6% |
| Soren and Inelase Lindhardbell | 10/10 | 4355 days | 1% |
| Soren and Inelase Lindhardbell | 10/10 | 4355 days | 1% |
| Marian | 8/10 | 4375 days | 0% |
| Jonathan Tuthill | 10/10 | 4633 days | 33% |
| Goran Backlund | 8/10 | 4633 days | 33% |
| Burkard Fabu | 10/10 | 4640 days | 33% |
| Susanne A | 10/10 | 4645 days | 33% |
| Peter Hart | 8/10 | 4645 days | 33% |
| Johann Maier | 10/10 | 4661 days | 33% |
| pamr | 10/10 | 4661 days | 33% |
| Colin Philpott | 9/10 | 4670 days | 33% |
| John Reynolds | 9/10 | 4672 days | 33% |
| R Laurysen | 7/10 | 4674 days | 31% |
| Mike1952 | 8/10 | 4677 days | 33% |
| Fred Saunders | 10/10 | 4703 days | 33% |
| Vbeirne | 9/10 | 4708 days | 33% |
| hendrik king | 7/10 | 4739 days | 31% |
| Andreas & Sonja | 8/10 | 4755 days | 33% |
| Anders Rathleff | 8/10 | 4755 days | 33% |
| R & M Willows | 10/10 | 4756 days | 33% |
| Schroeder | 9/10 | 5002 days | 33% |
| Jackie MacRostie | 9/10 | 5004 days | 33% |
| Krabbe | 8/10 | 5005 days | 33% |
| Diete Rokosch | 10/10 | 5015 days | 33% |
| Mirka Tinterova | 10/10 | 5016 days | 33% |
| J Blake | 9/10 | 5018 days | 33% |
| Pieter | 8/10 | 5019 days | 33% |
| George Lepple | 10/10 | 5372 days | 33% |
| Mr and Mrs Scott | 5/10 | 5379 days | 25% |
| Tony Killingray | 9/10 | 5382 days | 33% |
| Heike Pless | 10/10 | 5388 days | 33% |
| Ronja Op | 4/10 | 5403 days | 22% |
| Carol Dale | 9/10 | 5405 days | 33% |
| Carolina Gonzalez | 9/10 | 5405 days | 33% |
| Ines Diana | 10/10 | 5406 days | 33% |
| asiacritics | 8/10 | 5469 days | 33% |
| Anita de Boer | 9/10 | 5471 days | 33% |
| dirkdev | 9/10 | 5473 days | 33% |
| Bill Nash | 9/10 | 5473 days | 33% |
| rolandop | 8/10 | 5473 days | 33% |
| Vanessa | 10/10 | 5480 days | 33% |
| Karen & Ian | 10/10 | 5480 days | 33% |
| Hennie Neeleman | 9/10 | 5481 days | 33% |
| Pieter Neeleman | 8/10 | 5481 days | 33% |
| Mareike G | 7/10 | 5481 days | 31% |
| Josie Boyle | 5/10 | 5641 days | 25% |
| Katy Boyle | 5/10 | 5641 days | 25% |
| joyceb | 10/10 | 5668 days | 33% |
| Charles Lyne | 9/10 | 5683 days | 33% |
| BouterG | 7/10 | 5709 days | 31% |
| Kaye | 10/10 | 5713 days | 33% |
| caroldarren | 10/10 | 5713 days | 33% |
| JanL | 10/10 | 5713 days | 33% |
| LandR | 10/10 | 5714 days | 33% |
| JaneM | 9/10 | 5720 days | 33% |
| Erik | 8/10 | 5736 days | 33% |
| Grimm | 9/10 | 5737 days | 33% |
| Darren Main | 10/10 | 5744 days | 33% |
| RichardE | 9/10 | 5748 days | 33% |
| CarolF | 10/10 | 5748 days | 33% |
| Ian S | 7/10 | 5763 days | 31% |
| Rona | 8/10 | 5764 days | 33% |
| Nanno | 8/10 | 5764 days | 33% |
| Miranda | 7/10 | 5790 days | 31% |
| Kirsten | 8/10 | 5826 days | 33% |
| olland | 8/10 | 5834 days | 33% |
| carl_fagan | 10/10 | 5988 days | 33% |
| Anne and Derek | 8/10 | 6105 days | 33% |
| Andria Davis | 9/10 | 6106 days | 33% |
| Richard Steward | 10/10 | 6110 days | 33% |
| Marc Hertogs | 7/10 | 6129 days | 31% |
| Seldam | 6/10 | 6161 days | 29% |
| Monika | 8/10 | 6188 days | 33% |
| Rietveld | 9/10 | 6471 days | 33% |
| beesom | 8/10 | 6479 days | 33% |
| Rolf | 8/10 | 6491 days | 33% |
| Nicole | 8/10 | 6491 days | 33% |
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 Driving Creek Railway & Potteries experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.05% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 43 days. However the Driving Creek Railway & Potteries 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 Driving Creek Railway & Potteries experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
2.46% 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
85%
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.