Ranking Score Explained
Hi there, 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.
Nick Morrison
Rankers owner
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
86.13%
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 | Face-to-Face | Weight | Relative Weight |
|---|---|---|---|---|---|
| Richard Webb | 10/10 | 852 days |  |
17.23 | 100% |
| Colin George | 10/10 | 902 days | |
13.08 | 75% |
| Vanuxem | 3/10 | 1149 days | |
5.47 | 30% |
| Camilla Geert | 5/10 | 1159 days | |
5.89 | 33% |
| Manibod Vannaphone | 8/10 | 1176 days | |
5.87 | 32% |
| Stephan Friedrich | 10/10 | 1196 days | 4.86 | 26% | |
| Frank | 8/10 | 1208 days | |
5.81 | 32% |
| Tatiana Racheneau | 10/10 | 1222 days | |
5.79 | 32% |
| Liz and Alan Weathers | 8/10 | 1582 days | |
5.2 | 28% |
| Phil Bromby | 10/10 | 1907 days | |
4.67 | 25% |
| Helen | 10/10 | 1910 days | 3.88 | 21% | |
| Jonas Nielsen | 4/10 | 1916 days | |
4.38 | 24% |
| Karel | 9/10 | 1926 days | |
4.63 | 25% |
| FlyingKiwiGirl | 8/10 | 2275 days | 3.38 | 18% | |
| Emmanuel Tedeschi | 7/10 | 2277 days | |
4.06 | 22% |
| Soren and Inelase Lindhardbell | 10/10 | 2347 days | |
3.94 | 21% |
| Soren and Inelase Lindhardbell | 10/10 | 2347 days | |
3.94 | 21% |
| Marian | 8/10 | 2367 days | |
3.91 | 21% |
| Jonathan Tuthill | 10/10 | 2625 days | |
3.48 | 18% |
| Goran Backlund | 8/10 | 2625 days | |
3.48 | 18% |
| Burkard Fabu | 10/10 | 2632 days | |
3.47 | 18% |
| Susanne A | 10/10 | 2637 days | |
3.47 | 18% |
| Peter Hart | 8/10 | 2637 days | |
3.47 | 18% |
| Johann Maier | 10/10 | 2653 days | |
3.44 | 18% |
| pamr | 10/10 | 2653 days | |
3.44 | 18% |
| Colin Philpott | 9/10 | 2662 days | |
3.42 | 18% |
| John Reynolds | 9/10 | 2664 days | |
3.42 | 18% |
| R Laurysen | 7/10 | 2666 days | |
3.42 | 18% |
| Mike1952 | 8/10 | 2669 days | 2.84 | 14% | |
| Fred Saunders | 10/10 | 2695 days | |
3.37 | 17% |
| Vbeirne | 9/10 | 2700 days | 2.8 | 14% | |
| hendrik king | 7/10 | 2731 days | 2.76 | 14% | |
| Andreas & Sonja | 8/10 | 2747 days | |
3.28 | 17% |
| Anders Rathleff | 8/10 | 2747 days | |
3.28 | 17% |
| R & M Willows | 10/10 | 2748 days | |
3.28 | 17% |
| Schroeder | 9/10 | 2994 days | |
2.88 | 15% |
| Jackie MacRostie | 9/10 | 2996 days | |
2.88 | 15% |
| Krabbe | 8/10 | 2997 days | |
2.87 | 15% |
| Diete Rokosch | 10/10 | 3007 days | |
2.86 | 14% |
| Mirka Tinterova | 10/10 | 3008 days | |
2.86 | 14% |
| J Blake | 9/10 | 3010 days | |
2.85 | 14% |
| Pieter | 8/10 | 3011 days | |
2.85 | 14% |
| George Lepple | 10/10 | 3364 days | |
2.27 | 11% |
| Mr and Mrs Scott | 5/10 | 3371 days | 1.88 | 9% | |
| Tony Killingray | 9/10 | 3374 days | |
2.25 | 11% |
| Heike Pless | 10/10 | 3380 days | |
2.24 | 11% |
| Ronja Op | 4/10 | 3395 days | |
2.09 | 10% |
| Carol Dale | 9/10 | 3397 days | |
2.22 | 11% |
| Carolina Gonzalez | 9/10 | 3397 days | |
2.22 | 11% |
| Ines Diana | 10/10 | 3398 days | |
2.21 | 11% |
| asiacritics | 8/10 | 3461 days | 1.76 | 8% | |
| Anita de Boer | 9/10 | 3463 days | |
2.11 | 10% |
| dirkdev | 9/10 | 3465 days | |
2.1 | 10% |
| Bill Nash | 9/10 | 3465 days | |
2.1 | 10% |
| rolandop | 8/10 | 3465 days | |
2.1 | 10% |
| Vanessa | 10/10 | 3472 days | |
2.09 | 10% |
| Karen & Ian | 10/10 | 3472 days | |
2.09 | 10% |
| Hennie Neeleman | 9/10 | 3473 days | |
2.09 | 10% |
| Pieter Neeleman | 8/10 | 3473 days | |
2.09 | 10% |
| Mareike G | 7/10 | 3473 days | |
2.09 | 10% |
| Josie Boyle | 5/10 | 3633 days | |
1.83 | 8% |
| Katy Boyle | 5/10 | 3633 days | |
1.83 | 8% |
| joyceb | 10/10 | 3660 days | |
1.78 | 8% |
| Charles Lyne | 9/10 | 3675 days | 1.47 | 6% | |
| BouterG | 7/10 | 3701 days | |
1.72 | 8% |
| Kaye | 10/10 | 3705 days | |
1.71 | 8% |
| caroldarren | 10/10 | 3705 days | |
1.71 | 8% |
| JanL | 10/10 | 3705 days | |
1.71 | 8% |
| LandR | 10/10 | 3706 days | |
1.71 | 8% |
| JaneM | 9/10 | 3711 days | |
1.7 | 8% |
| Erik | 8/10 | 3728 days | |
1.67 | 7% |
| Grimm | 9/10 | 3729 days | |
1.67 | 7% |
| Darren Main | 10/10 | 3736 days | 1.38 | 6% | |
| RichardE | 9/10 | 3740 days | |
1.65 | 7% |
| CarolF | 10/10 | 3740 days | |
1.65 | 7% |
| Ian S | 7/10 | 3755 days | |
1.63 | 7% |
| Rona | 8/10 | 3756 days | |
1.63 | 7% |
| Nanno | 8/10 | 3756 days | |
1.63 | 7% |
| Miranda | 7/10 | 3782 days | |
1.58 | 7% |
| Kirsten | 8/10 | 3818 days | |
1.52 | 7% |
| olland | 8/10 | 3826 days | |
1.51 | 6% |
| carl_fagan | 10/10 | 3980 days | 1.05 | 4% | |
| Anne and Derek | 8/10 | 4097 days | |
1.07 | 4% |
| Andria Davis | 9/10 | 4098 days | |
1.06 | 4% |
| Richard Steward | 10/10 | 4102 days | |
1.06 | 4% |
| Marc Hertogs | 7/10 | 4121 days | |
1.03 | 4% |
| Seldam | 6/10 | 4153 days | |
0.97 | 3% |
| Monika | 8/10 | 4180 days | |
0.93 | 3% |
| Rietveld | 9/10 | 4463 days | |
0.46 | 0% |
| beesom | 8/10 | 4471 days | |
0.45 | 0% |
| Rolf | 8/10 | 4483 days | |
0.43 | 0% |
| Nicole | 8/10 | 4483 days | |
0.43 | 0% |
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
-7.28% Adjustment
There may be an adjustment if an experience hasn't received any reviews within the last 60 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 364 days.
The Driving Creek Railway & Potteries experience has been adjusted for 364 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 361 | -7.22% |
| 362 | -7.24% |
| 363 | -7.26% |
| 364 | -7.28% |
| 365 | -7.30% |
| 366 | -7.32% |
| 367 | -7.34% |
| … | … |
Final Ranking Score
79%
The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.