Kia ora, 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
86.40%
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 | 3416 days | 100% |
| Colin George | 10/10 | 3466 days | 93% |
| Vanuxem | 3/10 | 3713 days | 18% |
| Camilla Geert | 5/10 | 3723 days | 37% |
| Manibod Vannaphone | 8/10 | 3740 days | 54% |
| Stephan Friedrich | 10/10 | 3760 days | 53% |
| Frank | 8/10 | 3772 days | 50% |
| Tatiana Racheneau | 10/10 | 3786 days | 50% |
| Liz and Alan Weathers | 8/10 | 4146 days | 0% |
| Phil Bromby | 10/10 | 4471 days | 38% |
| Helen | 10/10 | 4474 days | 38% |
| Jonas Nielsen | 4/10 | 4480 days | 14% |
| Karel | 9/10 | 4490 days | 38% |
| FlyingKiwiGirl | 8/10 | 4839 days | 37% |
| Emmanuel Tedeschi | 7/10 | 4841 days | 34% |
| Soren and Inelase Lindhardbell | 10/10 | 4911 days | 38% |
| Soren and Inelase Lindhardbell | 10/10 | 4911 days | 38% |
| Marian | 8/10 | 4931 days | 37% |
| Jonathan Tuthill | 10/10 | 5189 days | 38% |
| Goran Backlund | 8/10 | 5189 days | 37% |
| Burkard Fabu | 10/10 | 5196 days | 38% |
| Susanne A | 10/10 | 5201 days | 38% |
| Peter Hart | 8/10 | 5201 days | 37% |
| Johann Maier | 10/10 | 5217 days | 38% |
| pamr | 10/10 | 5217 days | 38% |
| Colin Philpott | 9/10 | 5226 days | 38% |
| John Reynolds | 9/10 | 5228 days | 38% |
| R Laurysen | 7/10 | 5230 days | 34% |
| Mike1952 | 8/10 | 5233 days | 37% |
| Fred Saunders | 10/10 | 5259 days | 38% |
| Vbeirne | 9/10 | 5264 days | 38% |
| hendrik king | 7/10 | 5295 days | 34% |
| Andreas & Sonja | 8/10 | 5311 days | 37% |
| Anders Rathleff | 8/10 | 5311 days | 37% |
| R & M Willows | 10/10 | 5312 days | 38% |
| Schroeder | 9/10 | 5558 days | 38% |
| Jackie MacRostie | 9/10 | 5560 days | 38% |
| Krabbe | 8/10 | 5561 days | 37% |
| Diete Rokosch | 10/10 | 5571 days | 38% |
| Mirka Tinterova | 10/10 | 5572 days | 38% |
| J Blake | 9/10 | 5574 days | 38% |
| Pieter | 8/10 | 5575 days | 37% |
| George Lepple | 10/10 | 5928 days | 38% |
| Mr and Mrs Scott | 5/10 | 5935 days | 22% |
| Tony Killingray | 9/10 | 5938 days | 38% |
| Heike Pless | 10/10 | 5944 days | 38% |
| Ronja Op | 4/10 | 5959 days | 14% |
| Carol Dale | 9/10 | 5961 days | 38% |
| Carolina Gonzalez | 9/10 | 5961 days | 38% |
| Ines Diana | 10/10 | 5962 days | 38% |
| asiacritics | 8/10 | 6025 days | 37% |
| Anita de Boer | 9/10 | 6027 days | 38% |
| dirkdev | 9/10 | 6029 days | 38% |
| Bill Nash | 9/10 | 6029 days | 38% |
| rolandop | 8/10 | 6029 days | 37% |
| Vanessa | 10/10 | 6036 days | 38% |
| Karen & Ian | 10/10 | 6036 days | 38% |
| Hennie Neeleman | 9/10 | 6037 days | 38% |
| Pieter Neeleman | 8/10 | 6037 days | 37% |
| Mareike G | 7/10 | 6037 days | 34% |
| Josie Boyle | 5/10 | 6197 days | 22% |
| Katy Boyle | 5/10 | 6197 days | 22% |
| joyceb | 10/10 | 6224 days | 38% |
| Charles Lyne | 9/10 | 6239 days | 38% |
| BouterG | 7/10 | 6265 days | 34% |
| Kaye | 10/10 | 6269 days | 38% |
| caroldarren | 10/10 | 6269 days | 38% |
| JanL | 10/10 | 6269 days | 38% |
| LandR | 10/10 | 6269 days | 38% |
| JaneM | 9/10 | 6275 days | 38% |
| Erik | 8/10 | 6291 days | 37% |
| Grimm | 9/10 | 6292 days | 38% |
| Darren Main | 10/10 | 6300 days | 38% |
| RichardE | 9/10 | 6304 days | 38% |
| CarolF | 10/10 | 6304 days | 38% |
| Ian S | 7/10 | 6318 days | 34% |
| Rona | 8/10 | 6319 days | 37% |
| Nanno | 8/10 | 6319 days | 37% |
| Miranda | 7/10 | 6345 days | 34% |
| Kirsten | 8/10 | 6381 days | 37% |
| olland | 8/10 | 6389 days | 37% |
| carl_fagan | 10/10 | 6543 days | 38% |
| Anne and Derek | 8/10 | 6661 days | 37% |
| Andria Davis | 9/10 | 6662 days | 38% |
| Richard Steward | 10/10 | 6666 days | 38% |
| Marc Hertogs | 7/10 | 6685 days | 34% |
| Seldam | 6/10 | 6717 days | 29% |
| Monika | 8/10 | 6744 days | 37% |
| Rietveld | 9/10 | 7027 days | 38% |
| beesom | 8/10 | 7035 days | 37% |
| Rolf | 8/10 | 7047 days | 37% |
| Nicole | 8/10 | 7047 days | 37% |
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
-2.47% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 105 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 | -2.43% |
| 198 | -2.45% |
| 199 | -2.46% |
| 200 | -2.47% |
| 201 | -2.48% |
| 202 | -2.50% |
| 203 | -2.51% |
| … | … |
Balancing Adjustment
2.04% 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
86%
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.