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
86.31%
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 | 3238 days | 100% |
| Colin George | 10/10 | 3288 days | 95% |
| Vanuxem | 3/10 | 3535 days | 38% |
| Camilla Geert | 5/10 | 3545 days | 54% |
| Manibod Vannaphone | 8/10 | 3562 days | 69% |
| Stephan Friedrich | 10/10 | 3582 days | 68% |
| Frank | 8/10 | 3594 days | 66% |
| Tatiana Racheneau | 10/10 | 3608 days | 66% |
| Liz and Alan Weathers | 8/10 | 3968 days | 32% |
| Phil Bromby | 10/10 | 4293 days | 3% |
| Helen | 10/10 | 4296 days | 3% |
| Jonas Nielsen | 4/10 | 4302 days | 0% |
| Karel | 9/10 | 4312 days | 1% |
| FlyingKiwiGirl | 8/10 | 4661 days | 41% |
| Emmanuel Tedeschi | 7/10 | 4663 days | 39% |
| Soren and Inelase Lindhardbell | 10/10 | 4733 days | 42% |
| Soren and Inelase Lindhardbell | 10/10 | 4733 days | 42% |
| Marian | 8/10 | 4753 days | 41% |
| Jonathan Tuthill | 10/10 | 5011 days | 42% |
| Goran Backlund | 8/10 | 5011 days | 41% |
| Burkard Fabu | 10/10 | 5018 days | 42% |
| Susanne A | 10/10 | 5023 days | 42% |
| Peter Hart | 8/10 | 5023 days | 41% |
| Johann Maier | 10/10 | 5039 days | 42% |
| pamr | 10/10 | 5039 days | 42% |
| Colin Philpott | 9/10 | 5048 days | 42% |
| John Reynolds | 9/10 | 5050 days | 42% |
| R Laurysen | 7/10 | 5052 days | 39% |
| Mike1952 | 8/10 | 5055 days | 41% |
| Fred Saunders | 10/10 | 5081 days | 42% |
| Vbeirne | 9/10 | 5086 days | 42% |
| hendrik king | 7/10 | 5117 days | 39% |
| Andreas & Sonja | 8/10 | 5133 days | 41% |
| Anders Rathleff | 8/10 | 5133 days | 41% |
| R & M Willows | 10/10 | 5134 days | 42% |
| Schroeder | 9/10 | 5380 days | 42% |
| Jackie MacRostie | 9/10 | 5382 days | 42% |
| Krabbe | 8/10 | 5383 days | 41% |
| Diete Rokosch | 10/10 | 5393 days | 42% |
| Mirka Tinterova | 10/10 | 5394 days | 42% |
| J Blake | 9/10 | 5396 days | 42% |
| Pieter | 8/10 | 5397 days | 41% |
| George Lepple | 10/10 | 5750 days | 42% |
| Mr and Mrs Scott | 5/10 | 5757 days | 31% |
| Tony Killingray | 9/10 | 5760 days | 42% |
| Heike Pless | 10/10 | 5766 days | 42% |
| Ronja Op | 4/10 | 5781 days | 26% |
| Carol Dale | 9/10 | 5783 days | 42% |
| Carolina Gonzalez | 9/10 | 5783 days | 42% |
| Ines Diana | 10/10 | 5784 days | 42% |
| asiacritics | 8/10 | 5847 days | 41% |
| Anita de Boer | 9/10 | 5849 days | 42% |
| dirkdev | 9/10 | 5851 days | 42% |
| Bill Nash | 9/10 | 5851 days | 42% |
| rolandop | 8/10 | 5851 days | 41% |
| Vanessa | 10/10 | 5858 days | 42% |
| Karen & Ian | 10/10 | 5858 days | 42% |
| Hennie Neeleman | 9/10 | 5859 days | 42% |
| Pieter Neeleman | 8/10 | 5859 days | 41% |
| Mareike G | 7/10 | 5859 days | 39% |
| Josie Boyle | 5/10 | 6019 days | 31% |
| Katy Boyle | 5/10 | 6019 days | 31% |
| joyceb | 10/10 | 6046 days | 42% |
| Charles Lyne | 9/10 | 6061 days | 42% |
| BouterG | 7/10 | 6087 days | 39% |
| Kaye | 10/10 | 6091 days | 42% |
| caroldarren | 10/10 | 6091 days | 42% |
| JanL | 10/10 | 6091 days | 42% |
| LandR | 10/10 | 6092 days | 42% |
| JaneM | 9/10 | 6098 days | 42% |
| Erik | 8/10 | 6114 days | 41% |
| Grimm | 9/10 | 6115 days | 42% |
| Darren Main | 10/10 | 6122 days | 42% |
| RichardE | 9/10 | 6126 days | 42% |
| CarolF | 10/10 | 6126 days | 42% |
| Ian S | 7/10 | 6141 days | 39% |
| Rona | 8/10 | 6142 days | 41% |
| Nanno | 8/10 | 6142 days | 41% |
| Miranda | 7/10 | 6168 days | 39% |
| Kirsten | 8/10 | 6204 days | 41% |
| olland | 8/10 | 6212 days | 41% |
| carl_fagan | 10/10 | 6366 days | 42% |
| Anne and Derek | 8/10 | 6483 days | 41% |
| Andria Davis | 9/10 | 6484 days | 42% |
| Richard Steward | 10/10 | 6488 days | 42% |
| Marc Hertogs | 7/10 | 6507 days | 39% |
| Seldam | 6/10 | 6539 days | 36% |
| Monika | 8/10 | 6566 days | 41% |
| Rietveld | 9/10 | 6849 days | 42% |
| beesom | 8/10 | 6857 days | 41% |
| Rolf | 8/10 | 6869 days | 41% |
| Nicole | 8/10 | 6869 days | 41% |
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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
2.42% 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.