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

91.65%

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 10/10 880 days 12.32 100%
Sue Milne 10/10 1371 days true 4.46 36%
Fran and Ben 10/10 1382 days true 4.44 36%
Patricia 8/10 1708 days true 3.61 29%
Ceri Eaton 9/10 1737 days true 3.74 30%
Thomas Zilio 4/10 2480 days true 1.81 15%
JoMary Smith 9/10 2522 days 2.21 18%
Marco Schmidt 10/10 2807 days true 1.65 13%
Christian Schumacher 10/10 2807 days true 1.65 13%
Karin Genyn 10/10 2904 days true 1.46 12%
N Zitscher 5/10 2921 days 1.16 9%
Peter Harden 9/10 2923 days true 1.42 12%
Jenny McTigue 8/10 3203 days true 0.83 7%
Mike & Jennie 8/10 3204 days true 0.83 7%
Stefes Wencke 10/10 3206 days true 0.87 7%
Johan Kroese 9/10 3233 days true 0.82 7%
Herbert 8/10 3235 days true 0.77 6%
Michael 9/10 3542 days true 0.21 2%
Richard Dudfield 10/10 3545 days true 0.21 2%
Louise van der Hyden 9/10 3557 days true 0.18 1%
elmoandjoey 10/10 3649 days 0.0 0%
Tim 10/10 3679 days 0.0 0%
Conny 9/10 3858 days true 0.0 0%
Victoria Slater 7/10 3898 days true 0.0 0%
Risch & Seybold 9/10 3906 days true 0.0 0%
Schumacher 9/10 3911 days true 0.0 0%
Greg Kennedy 9/10 3971 days true 0.0 0%
csziegler 10/10 3998 days true 0.0 0%
stephenb 8/10 4008 days true 0.0 0%
carsteng 7/10 4008 days true 0.0 0%
Kathrin Thomas 9/10 4026 days true 0.0 0%
james masura 10/10 4044 days 0.0 0%
Steve Drake 1/10 4105 days 0.0 0%
Andrea 7/10 4178 days true 0.0 0%
stephen 9/10 4259 days true 0.0 0%
NatasjaV 8/10 4276 days true 0.0 0%
JimmyK 8/10 4276 days true 0.0 0%
JohannaB 7/10 4277 days true 0.0 0%
Peter Bowen-Simpkins 9/10 4278 days true 0.0 0%
eatc 9/10 4289 days 0.0 0%
Daniel 3/10 4294 days true 0.0 0%
schenk 8/10 4308 days true 0.0 0%
groenewold 8/10 4322 days true 0.0 0%
Karen 8/10 4329 days true 0.0 0%
Ducolq 7/10 4330 days true 0.0 0%
Rebekka 5/10 4330 days true 0.0 0%
Mary Hamilton 10/10 4422 days 0.0 0%
Esther 8/10 4464 days true 0.0 0%
Jim Summers 8/10 4506 days true 0.0 0%
Stewart 8/10 4641 days true 0.0 0%
angela 9/10 4641 days true 0.0 0%
Bauer 7/10 4656 days true 0.0 0%
Kenneth and Mette 8/10 4658 days true 0.0 0%
Knol 9/10 4659 days true 0.0 0%
Dorris Schwarz 9/10 4704 days true 0.0 0%
Eleanor Adams 9/10 4750 days true 0.0 0%
Fred 9/10 4988 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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 43 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.

The Akaroa Harbour Nature Cruises experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Final Ranking Score

88%

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.