Ranking Score Explained

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.

Cymen Crick's avatar

Cymen Crick

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

86.11%

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 2836 days 100%
Colin George 10/10 2886 days 97%
Vanuxem 3/10 3133 days 43%
Camilla Geert 5/10 3143 days 60%
Manibod Vannaphone 8/10 3160 days 77%
Stephan Friedrich 10/10 3180 days 77%
Frank 8/10 3192 days 75%
Tatiana Racheneau 10/10 3206 days 76%
Liz and Alan Weathers 8/10 3566 days 51%
Phil Bromby 10/10 3891 days 30%
Helen 10/10 3894 days 30%
Jonas Nielsen 4/10 3900 days 19%
Karel 9/10 3910 days 29%
FlyingKiwiGirl 8/10 4259 days 6%
Emmanuel Tedeschi 7/10 4261 days 5%
Soren and Inelase Lindhardbell 10/10 4331 days 1%
Soren and Inelase Lindhardbell 10/10 4331 days 1%
Marian 8/10 4351 days 0%
Jonathan Tuthill 10/10 4609 days 32%
Goran Backlund 8/10 4609 days 31%
Burkard Fabu 10/10 4616 days 32%
Susanne A 10/10 4621 days 32%
Peter Hart 8/10 4621 days 31%
Johann Maier 10/10 4637 days 32%
pamr 10/10 4637 days 32%
Colin Philpott 9/10 4646 days 32%
John Reynolds 9/10 4648 days 32%
R Laurysen 7/10 4650 days 30%
Mike1952 8/10 4653 days 31%
Fred Saunders 10/10 4679 days 32%
Vbeirne 9/10 4684 days 32%
hendrik king 7/10 4715 days 30%
Andreas & Sonja 8/10 4731 days 31%
Anders Rathleff 8/10 4731 days 31%
R & M Willows 10/10 4732 days 32%
Schroeder 9/10 4978 days 32%
Jackie MacRostie 9/10 4980 days 32%
Krabbe 8/10 4981 days 31%
Diete Rokosch 10/10 4991 days 32%
Mirka Tinterova 10/10 4992 days 32%
J Blake 9/10 4994 days 32%
Pieter 8/10 4995 days 31%
George Lepple 10/10 5348 days 32%
Mr and Mrs Scott 5/10 5355 days 24%
Tony Killingray 9/10 5358 days 32%
Heike Pless 10/10 5364 days 32%
Ronja Op 4/10 5379 days 20%
Carol Dale 9/10 5381 days 32%
Carolina Gonzalez 9/10 5381 days 32%
Ines Diana 10/10 5382 days 32%
asiacritics 8/10 5445 days 31%
Anita de Boer 9/10 5447 days 32%
dirkdev 9/10 5449 days 32%
Bill Nash 9/10 5449 days 32%
rolandop 8/10 5449 days 31%
Vanessa 10/10 5456 days 32%
Karen & Ian 10/10 5456 days 32%
Hennie Neeleman 9/10 5457 days 32%
Pieter Neeleman 8/10 5457 days 31%
Mareike G 7/10 5457 days 30%
Josie Boyle 5/10 5617 days 24%
Katy Boyle 5/10 5617 days 24%
joyceb 10/10 5644 days 32%
Charles Lyne 9/10 5659 days 32%
BouterG 7/10 5685 days 30%
Kaye 10/10 5689 days 32%
caroldarren 10/10 5689 days 32%
JanL 10/10 5689 days 32%
LandR 10/10 5690 days 32%
JaneM 9/10 5695 days 32%
Erik 8/10 5711 days 31%
Grimm 9/10 5712 days 32%
Darren Main 10/10 5720 days 32%
RichardE 9/10 5724 days 32%
CarolF 10/10 5724 days 32%
Ian S 7/10 5738 days 30%
Rona 8/10 5740 days 31%
Nanno 8/10 5740 days 31%
Miranda 7/10 5766 days 30%
Kirsten 8/10 5802 days 31%
olland 8/10 5809 days 31%
carl_fagan 10/10 5963 days 32%
Anne and Derek 8/10 6081 days 31%
Andria Davis 9/10 6082 days 32%
Richard Steward 10/10 6086 days 32%
Marc Hertogs 7/10 6105 days 30%
Seldam 6/10 6137 days 27%
Monika 8/10 6164 days 31%
Rietveld 9/10 6447 days 32%
beesom 8/10 6455 days 31%
Rolf 8/10 6467 days 31%
Nicole 8/10 6467 days 31%

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

-3.81% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 52 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 -3.75%
198 -3.77%
199 -3.79%
200 -3.81%
201 -3.83%
202 -3.85%
203 -3.87%

Balancing Adjustment

2.41% 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.