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 Driftwood Ecotours.

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

Driftwood Ecotours

Valid Reviews

28 Valid Reviews

The Driftwood Ecotours experience has a total of 28 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 28 valid reviews:

Rating Count Percentage
10/10 20
71%
9/10 7
25%
8/10 0
0%
7/10 1
4%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

96.43% Average

The raw data average (mean) for all the Driftwood Ecotours valid reviews is 96.43% and is based on 28 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

4 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 28 valid reviews, the experience has 4 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 4 face-to-face reviews:

Rating Count Percentage
10/10 2
50%
9/10 2
50%
8/10 0
0%
7/10 0
0%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

95.00% Average

The raw data average (mean) for all the Driftwood Ecotours face-to-face reviews is 95.00% and is based on 4 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

97.66%

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
Kathryn B 10/10 2824 days 100%
Chris Piper 9/10 2916 days 89%
SuzP 10/10 3189 days 56%
jaylaw 9/10 3220 days 52%
mayan 7/10 3495 days 17%
Wisi_Yvonne 10/10 3524 days 15%
JBuckman 9/10 3555 days 11%
suemarcusshaun 9/10 3647 days 0%
bhurst 10/10 3861 days 62%
greenscribe 10/10 4195 days 62%
coriolis_effect 10/10 4226 days 62%
LisaB 10/10 4254 days 62%
Simon 9/10 4254 days 62%
Mike Everly 10/10 4254 days 62%
Carol 10/10 4254 days 62%
JohnandSue 10/10 4254 days 62%
miriamm 10/10 4285 days 62%
Andrew 10/10 4285 days 62%
Dennis Robinson 10/10 4285 days 62%
Tika Greenlaw 10/10 4346 days 62%
indigo 10/10 4346 days 62%
Marama Markman 10/10 4346 days 62%
Lara Franklin 10/10 4377 days 62%
bahama 10/10 4460 days 43%
robertd 9/10 4460 days 43%
Julia Marshall 10/10 4711 days 62%
Aoife & Colin 10/10 4776 days 43%
Bev 9/10 4776 days 43%

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 Driftwood Ecotours experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.14% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 71 days. However the Driftwood Ecotours 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 Driftwood Ecotours experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -3.09%
198 -3.11%
199 -3.12%
200 -3.14%
201 -3.16%
202 -3.17%
203 -3.19%

Final Ranking Score

95%

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.