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 Akaroa Harbour Nature Cruises.

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

Akaroa Harbour Nature Cruises

Valid Reviews

57 Valid Reviews

The Akaroa Harbour Nature Cruises experience has a total of 57 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 57 valid reviews:

Rating Count Percentage
10/10 13
23%
9/10 19
33%
8/10 14
25%
7/10 6
11%
6/10 0
0%
5/10 2
4%
4/10 1
2%
3/10 1
2%
2/10 0
0%
1/10 1
2%

82.98% Average

The raw data average (mean) for all the Akaroa Harbour Nature Cruises valid reviews is 82.98% and is based on 57 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

48 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 57 valid reviews, the experience has 48 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 48 face-to-face reviews:

Rating Count Percentage
10/10 8
17%
9/10 17
35%
8/10 14
29%
7/10 6
13%
6/10 0
0%
5/10 1
2%
4/10 1
2%
3/10 1
2%
2/10 0
0%
1/10 0
0%

83.13% Average

The raw data average (mean) for all the Akaroa Harbour Nature Cruises face-to-face reviews is 83.13% and is based on 48 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

93.90%

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
Stefano Clerici 10/10 472 days 64.7 100%
Sue Milne 10/10 963 days true 7.76 12%
Fran and Ben 10/10 974 days true 7.32 11%
Patricia 8/10 1300 days true 4.42 7%
Ceri Eaton 9/10 1329 days true 4.6 7%
Thomas Zilio 4/10 2072 days true 2.63 4%
JoMary Smith 9/10 2114 days 3.26 5%
Marco Schmidt 10/10 2399 days true 2.77 4%
Christian Schumacher 10/10 2399 days true 2.77 4%
Karin Genyn 10/10 2496 days true 2.6 4%
N Zitscher 5/10 2513 days 2.08 3%
Peter Harden 9/10 2515 days true 2.57 4%
Jenny McTigue 8/10 2795 days true 1.98 3%
Mike & Jennie 8/10 2796 days true 1.98 3%
Stefes Wencke 10/10 2798 days true 2.08 3%
Johan Kroese 9/10 2825 days true 2.04 3%
Herbert 8/10 2827 days true 1.93 3%
Michael 9/10 3134 days true 1.51 2%
Richard Dudfield 10/10 3137 days true 1.5 2%
Louise van der Hyden 9/10 3149 days true 1.48 2%
elmoandjoey 10/10 3241 days 1.33 2%
Tim 10/10 3271 days 1.27 2%
Conny 9/10 3450 days true 0.97 1%
Victoria Slater 7/10 3490 days true 0.82 1%
Risch & Seybold 9/10 3498 days true 0.89 1%
Schumacher 9/10 3503 days true 0.88 1%
Greg Kennedy 9/10 3563 days true 0.77 1%
csziegler 10/10 3590 days true 0.73 1%
stephenb 8/10 3600 days true 0.68 1%
carsteng 7/10 3600 days true 0.65 1%
Kathrin Thomas 9/10 3618 days true 0.68 1%
james masura 10/10 3636 days 0.65 1%
Steve Drake 1/10 3697 days 0.4 1%
Andrea 7/10 3770 days true 0.38 1%
stephen 9/10 3851 days true 0.28 0%
NatasjaV 8/10 3868 days true 0.24 0%
JimmyK 8/10 3868 days true 0.24 0%
JohannaB 7/10 3869 days true 0.23 0%
Peter Bowen-Simpkins 9/10 3870 days true 0.25 0%
eatc 9/10 3881 days 0.23 0%
Daniel 3/10 3886 days true 0.17 0%
schenk 8/10 3900 days true 0.19 0%
groenewold 8/10 3914 days true 0.16 0%
Karen 8/10 3921 days true 0.15 0%
Ducolq 7/10 3922 days true 0.14 0%
Rebekka 5/10 3922 days true 0.13 0%
Mary Hamilton 10/10 4014 days 0.0 0%
Esther 8/10 4056 days true 0.0 0%
Jim Summers 8/10 4098 days true 0.0 0%
Stewart 8/10 4233 days true 0.0 0%
angela 9/10 4233 days true 0.0 0%
Bauer 7/10 4248 days true 0.0 0%
Kenneth and Mette 8/10 4250 days true 0.0 0%
Knol 9/10 4251 days true 0.0 0%
Dorris Schwarz 9/10 4296 days true 0.0 0%
Eleanor Adams 9/10 4342 days true 0.0 0%
Fred 9/10 4580 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 Akaroa Harbour Nature Cruises 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 Akaroa Harbour Nature Cruises 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 Akaroa Harbour Nature Cruises 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

90%

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.