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 E-Ko Tours.

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

E-Ko Tours

Valid Reviews

39 Valid Reviews

The E-Ko Tours experience has a total of 43 reviews. There are 39 valid reviews that are included when calculating the ranking score and 4 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 39 valid reviews:

Rating Count Percentage
10/10 19
49%
9/10 11
28%
8/10 6
15%
7/10 3
8%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

91.79% Average

The raw data average (mean) for all the E-Ko Tours valid reviews is 91.79% and is based on 39 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 39 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 12
43%
9/10 10
36%
8/10 5
18%
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%

91.79% Average

The raw data average (mean) for all the E-Ko Tours face-to-face reviews is 91.79% 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

93.59%

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
Regan 10/10 821 days 100%
Antje Kreuzer 7/10 1826 days 19%
Anna Stoehr 9/10 1859 days 21%
Maria = Moller Hansen 10/10 2568 days 12%
Bjorn Houlberg 10/10 2568 days 12%
Klaus Petersen 9/10 2575 days 12%
Rikke Petersen 9/10 2575 days 12%
Steve Douthwaite 10/10 3001 days 7%
Fahl 10/10 3011 days 7%
Geoffrey Kuppens 9/10 3296 days 4%
kiwifrenchy 8/10 3316 days 4%
Steve Eley 10/10 3387 days 3%
Claudia Jackson and Geoffroy van Roelenbosch 8/10 3636 days 0%
Thomas 10/10 3640 days 0%
Jackie MacRostie 9/10 3643 days 0%
Louise van der Hyden 8/10 3651 days 6%
CarolynDawn 10/10 3804 days 6%
Michael 10/10 4028 days 6%
djrogers 10/10 4101 days 6%
Julie Seakins 9/10 4108 days 6%
Roeder Grit 10/10 4119 days 6%
Ton Buil 10/10 4120 days 6%
Lance 10/10 4383 days 6%
Pavel 9/10 4389 days 6%
Heather 9/10 4389 days 6%
Rick Rissewijck 10/10 4392 days 6%
Amanda Williams 10/10 4393 days 6%
CarolineR 9/10 4407 days 6%
KarinB1 8/10 4407 days 6%
Leidner 9/10 4429 days 6%
Jason 8/10 4457 days 6%
Groen 9/10 4465 days 6%
Paul 10/10 4470 days 6%
Birte 10/10 4473 days 6%
Georgina Mulligan 7/10 4672 days 5%
Alex309 10/10 4680 days 6%
Annie 7/10 4722 days 5%
Paul McDonell 10/10 4744 days 6%
Peter 8/10 5122 days 6%

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 E-Ko Tours experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.11% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 55 days. However the E-Ko Tours 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 E-Ko Tours experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.05%
198 -4.07%
199 -4.09%
200 -4.11%
201 -4.13%
202 -4.15%
203 -4.17%

Final Ranking Score

89%

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.