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 Discovery Lodge.

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

Discovery Lodge

Valid Reviews

34 Valid Reviews

The Discovery Lodge experience has a total of 34 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 34 valid reviews:

Rating Count Percentage
10/10 5
9/10 14
8/10 12
7/10 2
6/10 1
5/10 0
4/10 0
3/10 0
2/10 0
1/10 0

85.88% Average

The raw data average (mean) for all the Discovery Lodge valid reviews is 85.88% and is based on 34 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

28 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 34 valid reviews, the experience has 28 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 28 face-to-face reviews:

Rating Count Percentage
10/10 2
9/10 12
8/10 12
7/10 1
6/10 1
5/10 0
4/10 0
3/10 0
2/10 0
1/10 0

84.64% Average

The raw data average (mean) for all the Discovery Lodge face-to-face reviews is 84.64% and is based on 28 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average


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
Bill 10/10 746 days 24.3 100%
Eva-Maria Krueger 10/10 2056 days 3.35 14%
Casandra Prunica 8/10 2058 days true 3.18 13%
Lauren Hedley 9/10 2058 days true 3.35 14%
Katya Verikaitis 8/10 2414 days true 2.6 11%
Hanneke P 7/10 2480 days 2.39 10%
Deana Peters 8/10 2798 days true 1.98 8%
Konny 10/10 2893 days true 1.92 8%
Rachel Cockroft 8/10 3124 days true 1.45 6%
Steve Waterhouse 9/10 3137 days true 1.5 6%
Thelia Beament 9/10 3155 days true 1.47 6%
Katharina Schmitts 9/10 3156 days true 1.47 6%
Alexandra 10/10 3169 days true 1.45 6%
C Gobl 9/10 3179 days true 1.43 6%
beeskneez999 10/10 3211 days 1.38 6%
koster 9/10 3451 days true 0.97 4%
Irene Turley 9/10 3540 days true 0.81 3%
Eva 9/10 3543 days true 0.81 3%
Nigel Armstrong 8/10 3556 days true 0.75 3%
Thomas 8/10 3614 days true 0.65 3%
Louis Duhaime 9/10 3618 days true 0.68 3%
Katerina Wimmer 8/10 3618 days true 0.65 3%
Serge Yken 6/10 3633 days true 0.54 2%
Jiri Klima 9/10 3637 days 0.65 3%
JoR 7/10 3848 days true 0.26 1%
SylviaV 8/10 3851 days true 0.27 1%
Anna 9/10 3853 days 0.28 1%
Benny 8/10 3858 days true 0.26 1%
TsjerkJ 9/10 3869 days true 0.25 1%
CarolineZ 8/10 3878 days true 0.22 1%
VickiEngland 8/10 3879 days true 0.22 1%
AurelieD 9/10 3898 days true 0.2 1%
Thomas 8/10 3923 days true 0.15 1%
Emma & Rob 9/10 4264 days true 0.0 0%


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 Discovery Lodge 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 Discovery Lodge 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 Discovery Lodge 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


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.