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 Ultimate Descents New Zealand.

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

Ultimate Descents New Zealand

Valid Reviews

50 Valid Reviews

The Ultimate Descents New Zealand experience has a total of 50 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 50 valid reviews:

Rating Count Percentage
10/10 27
54%
9/10 10
20%
8/10 9
18%
7/10 3
6%
6/10 1
2%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

91.80% Average

The raw data average (mean) for all the Ultimate Descents New Zealand valid reviews is 91.80% and is based on 50 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

16 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 50 valid reviews, the experience has 16 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 16 face-to-face reviews:

Rating Count Percentage
10/10 4
25%
9/10 5
31%
8/10 6
38%
7/10 0
0%
6/10 1
6%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

86.88% Average

The raw data average (mean) for all the Ultimate Descents New Zealand face-to-face reviews is 86.88% and is based on 16 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

91.68%

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
Tamsin Banks 10/10 908 days 10.54 100%
Antoine 9/10 1551 days true 5.25 43%
Louison Laissus 9/10 1551 days true 5.25 43%
Inga Memmen 10/10 1568 days true 5.22 42%
Howell Davies 8/10 2281 days true 4.05 30%
Frank & Margot Best 8/10 2590 days true 3.54 24%
Weez18 10/10 2607 days 2.93 18%
Cory Wornell 8/10 2627 days true 3.48 24%
Coral Last 8/10 2638 days true 3.46 23%
Maite Severins 8/10 2657 days true 3.43 23%
aggiemary04 10/10 2789 days 2.68 15%
jameyg 10/10 2911 days 2.51 13%
That_Guy 10/10 2942 days 2.47 13%
Tony Dodds 10/10 2972 days 2.43 12%
Patti S 7/10 3003 days 2.39 12%
Alain Deslandres 6/10 3044 days true 2.8 16%
hobbes193 10/10 3062 days 2.31 11%
ChristinaO 8/10 3062 days 2.31 11%
Grainne Ahern 10/10 3062 days 2.31 11%
Chidlebyte 10/10 3062 days 2.31 11%
paulj 9/10 3078 days true 2.74 16%
micha_de 10/10 3093 days 2.26 10%
Debs NZ 10/10 3093 days 2.26 10%
Julie Seakins 10/10 3093 days 2.26 10%
Tash 10/10 3337 days 1.93 7%
Jason 10/10 3337 days 1.93 7%
scott lomill 10/10 3341 days 1.92 7%
Sam 10/10 3358 days true 2.28 11%
mnk 10/10 3368 days 1.89 6%
John 9/10 3379 days true 2.25 10%
Laura 10/10 3386 days true 2.23 10%
Jenny 8/10 3387 days true 2.23 10%
Dave 9/10 3387 days true 2.23 10%
Cliff 10/10 3394 days true 2.22 10%
petra 7/10 3396 days 1.85 6%
anette brown 10/10 3396 days 1.85 6%
Ciaran Doyle 9/10 3401 days 1.84 6%
niall stephenson 8/10 3401 days 1.84 6%
pcoll 9/10 3427 days 1.81 5%
Matthias Hinnrichs 9/10 3447 days 1.78 5%
Georgina Mulligan 10/10 3657 days 1.49 2%
Laura H 9/10 3667 days 1.48 2%
Shane O'Mahony 9/10 3667 days 1.48 2%
Eric Scott 7/10 3683 days 1.45 2%
Rose M 10/10 3690 days 1.45 2%
russell_mahar 8/10 3690 days 1.45 2%
kevoc9 10/10 3714 days 1.41 1%
Lindsey_Morriss 10/10 3796 days 1.3 0%
cmorriss 10/10 3796 days 1.3 0%
Travis Brennan 10/10 3797 days 1.3 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 Ultimate Descents New Zealand 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 Ultimate Descents New Zealand 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 Ultimate Descents New Zealand 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

84%

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.