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 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
86.41%
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 | 3436 days | 100% |
| Colin George | 10/10 | 3486 days | 93% |
| Vanuxem | 3/10 | 3733 days | 19% |
| Camilla Geert | 5/10 | 3743 days | 38% |
| Manibod Vannaphone | 8/10 | 3760 days | 54% |
| Stephan Friedrich | 10/10 | 3780 days | 53% |
| Frank | 8/10 | 3792 days | 50% |
| Tatiana Racheneau | 10/10 | 3806 days | 50% |
| Liz and Alan Weathers | 8/10 | 4166 days | 0% |
| Phil Bromby | 10/10 | 4491 days | 41% |
| Helen | 10/10 | 4494 days | 41% |
| Jonas Nielsen | 4/10 | 4500 days | 17% |
| Karel | 9/10 | 4510 days | 40% |
| FlyingKiwiGirl | 8/10 | 4859 days | 40% |
| Emmanuel Tedeschi | 7/10 | 4861 days | 36% |
| Soren and Inelase Lindhardbell | 10/10 | 4931 days | 41% |
| Soren and Inelase Lindhardbell | 10/10 | 4931 days | 41% |
| Marian | 8/10 | 4951 days | 40% |
| Jonathan Tuthill | 10/10 | 5209 days | 41% |
| Goran Backlund | 8/10 | 5209 days | 40% |
| Burkard Fabu | 10/10 | 5216 days | 41% |
| Susanne A | 10/10 | 5221 days | 41% |
| Peter Hart | 8/10 | 5221 days | 40% |
| Johann Maier | 10/10 | 5237 days | 41% |
| pamr | 10/10 | 5237 days | 41% |
| Colin Philpott | 9/10 | 5246 days | 40% |
| John Reynolds | 9/10 | 5248 days | 40% |
| R Laurysen | 7/10 | 5250 days | 36% |
| Mike1952 | 8/10 | 5253 days | 40% |
| Fred Saunders | 10/10 | 5279 days | 41% |
| Vbeirne | 9/10 | 5284 days | 40% |
| hendrik king | 7/10 | 5315 days | 36% |
| Andreas & Sonja | 8/10 | 5331 days | 40% |
| Anders Rathleff | 8/10 | 5331 days | 40% |
| R & M Willows | 10/10 | 5332 days | 41% |
| Schroeder | 9/10 | 5578 days | 40% |
| Jackie MacRostie | 9/10 | 5580 days | 40% |
| Krabbe | 8/10 | 5581 days | 40% |
| Diete Rokosch | 10/10 | 5591 days | 41% |
| Mirka Tinterova | 10/10 | 5592 days | 41% |
| J Blake | 9/10 | 5594 days | 40% |
| Pieter | 8/10 | 5595 days | 40% |
| George Lepple | 10/10 | 5948 days | 41% |
| Mr and Mrs Scott | 5/10 | 5955 days | 24% |
| Tony Killingray | 9/10 | 5958 days | 40% |
| Heike Pless | 10/10 | 5964 days | 41% |
| Ronja Op | 4/10 | 5979 days | 17% |
| Carol Dale | 9/10 | 5981 days | 40% |
| Carolina Gonzalez | 9/10 | 5981 days | 40% |
| Ines Diana | 10/10 | 5982 days | 41% |
| asiacritics | 8/10 | 6045 days | 40% |
| Anita de Boer | 9/10 | 6047 days | 40% |
| dirkdev | 9/10 | 6049 days | 40% |
| Bill Nash | 9/10 | 6049 days | 40% |
| rolandop | 8/10 | 6049 days | 40% |
| Vanessa | 10/10 | 6056 days | 41% |
| Karen & Ian | 10/10 | 6056 days | 41% |
| Hennie Neeleman | 9/10 | 6057 days | 40% |
| Pieter Neeleman | 8/10 | 6057 days | 40% |
| Mareike G | 7/10 | 6057 days | 36% |
| Josie Boyle | 5/10 | 6217 days | 24% |
| Katy Boyle | 5/10 | 6217 days | 24% |
| joyceb | 10/10 | 6244 days | 41% |
| Charles Lyne | 9/10 | 6259 days | 40% |
| BouterG | 7/10 | 6285 days | 36% |
| Kaye | 10/10 | 6289 days | 41% |
| caroldarren | 10/10 | 6289 days | 41% |
| JanL | 10/10 | 6289 days | 41% |
| LandR | 10/10 | 6289 days | 41% |
| JaneM | 9/10 | 6295 days | 40% |
| Erik | 8/10 | 6311 days | 40% |
| Grimm | 9/10 | 6312 days | 40% |
| Darren Main | 10/10 | 6320 days | 41% |
| RichardE | 9/10 | 6324 days | 40% |
| CarolF | 10/10 | 6324 days | 41% |
| Ian S | 7/10 | 6338 days | 36% |
| Rona | 8/10 | 6339 days | 40% |
| Nanno | 8/10 | 6339 days | 40% |
| Miranda | 7/10 | 6365 days | 36% |
| Kirsten | 8/10 | 6401 days | 40% |
| olland | 8/10 | 6409 days | 40% |
| carl_fagan | 10/10 | 6563 days | 41% |
| Anne and Derek | 8/10 | 6681 days | 40% |
| Andria Davis | 9/10 | 6682 days | 40% |
| Richard Steward | 10/10 | 6686 days | 41% |
| Marc Hertogs | 7/10 | 6705 days | 36% |
| Seldam | 6/10 | 6737 days | 31% |
| Monika | 8/10 | 6764 days | 40% |
| Rietveld | 9/10 | 7047 days | 40% |
| beesom | 8/10 | 7055 days | 40% |
| Rolf | 8/10 | 7067 days | 40% |
| Nicole | 8/10 | 7067 days | 40% |
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
-2.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 118 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 | -2.12% |
| 198 | -2.13% |
| 199 | -2.14% |
| 200 | -2.15% |
| 201 | -2.16% |
| 202 | -2.17% |
| 203 | -2.18% |
| … | … |
Balancing Adjustment
1.98% 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.