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 The Weta Cave.

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's avatar

Nick Morrison

Rankers owner

The Weta Cave

Valid Reviews

52 Valid Reviews

The The Weta Cave experience has a total of 52 valid reviews. There are no invalid reviews 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 52 valid reviews:

Rating Count Percentage
10/10 15
29%
9/10 14
27%
8/10 11
21%
7/10 7
13%
6/10 2
4%
5/10 2
4%
4/10 0
0%
3/10 0
0%
2/10 1
2%
1/10 0
0%

84.04% Average

The raw data average (mean) for all the The Weta Cave valid reviews is 84.04% and is based on 52 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

50 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 52 valid reviews, the experience has 50 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 50 face-to-face reviews:

Rating Count Percentage
10/10 13
26%
9/10 14
28%
8/10 11
22%
7/10 7
14%
6/10 2
4%
5/10 2
4%
4/10 0
0%
3/10 0
0%
2/10 1
2%
1/10 0
0%

83.40% Average

The raw data average (mean) for all the The Weta Cave face-to-face reviews is 83.40% and is based on 50 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

85.06%

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
Harriet and Paul 9/10 1136 days true 4.92 100%
Margot 7/10 1206 days true 4.35 88%
Bjorn Nielsen 9/10 1208 days true 4.78 97%
Rose Guillaume 10/10 1230 days true 4.74 96%
Pierre Landenne 7/10 1230 days true 4.31 88%
Simeon Manz 10/10 1242 days true 4.71 96%
Selma Franke 8/10 1249 days true 4.46 91%
MARK CURPHEY 10/10 1259 days true 4.68 95%
Sam Taylor 8/10 1260 days true 4.44 90%
Dave Ellis 8/10 1260 days true 4.44 90%
tinagermany111 5/10 1279 days true 3.76 76%
Thomas Le Buzulier 10/10 1473 days true 4.26 87%
Daniel Idiart 10/10 1478 days true 4.25 86%
Liam King 9/10 1479 days true 4.25 86%
Matthew Baker 9/10 1479 days true 4.25 86%
Karin Karlsson 8/10 1482 days true 4.03 82%
Hana Rachfalik 10/10 1485 days 4.24 86%
Anthony 8/10 1487 days true 4.02 82%
Ann-Kathrin 8/10 1511 days true 3.98 81%
Emma Burtscher 2/10 1519 days true 3.13 64%
Jan 10/10 1522 days true 4.16 85%
Briony 8/10 1523 days true 3.95 80%
David Schelensky 10/10 1523 days true 4.16 85%
Sascha Daub 8/10 1524 days true 3.95 80%
Richard Starkeq 9/10 1524 days true 4.16 85%
Robin Ings 6/10 1528 days true 3.45 70%
Flo and Frieda 7/10 1547 days true 3.75 76%
Pierre Planchez 9/10 1892 days true 3.44 70%
Lukas Dost 10/10 1907 days true 3.41 69%
Greg Little 10/10 1908 days true 3.41 69%
Iana Pauga 10/10 1918 days 3.39 69%
Astrid Egesten 9/10 1957 days true 3.31 67%
James Russell 8/10 2201 days true 2.69 55%
Hannah Watt 7/10 2201 days true 2.58 52%
Jan Legein 9/10 2202 days true 2.83 58%
Herman Schulz 8/10 2227 days true 2.65 54%
Rhys Williams 9/10 2249 days true 2.74 56%
Dan Lawson 10/10 2265 days true 2.71 55%
Paul Taylor 5/10 2583 days true 1.69 34%
Cloarec Guillaume 10/10 2585 days true 2.08 42%
Clodec 9/10 2585 days true 2.08 42%
Michal 9/10 2594 days true 2.07 42%
Roshnie 7/10 2690 days true 1.71 35%
Frederick Neilsen 9/10 2692 days true 1.87 38%
Frank Claassen 8/10 2951 days true 1.3 26%
Kimberley Mills 9/10 2971 days true 1.33 27%
Helen & Laurence 7/10 3053 days true 1.06 22%
Dave van Bergen 9/10 3285 days true 0.71 15%
Anika Jedelsky 10/10 3322 days true 0.64 13%
Kathryn Knipe 6/10 3339 days true 0.51 10%
Stefan Morris 7/10 3340 days true 0.55 11%
lindam 10/10 3655 days true 0.0 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 The Weta Cave experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.98% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the The Weta Cave 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 199 days.

The The Weta Cave experience has been adjusted for 199 days. Adjustments are according to the following table.

Days Adjustment
196 -3.92%
197 -3.94%
198 -3.96%
199 -3.98%
200 -4.00%
201 -4.02%
202 -4.04%

Final Ranking Score

81%

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.