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

96.46%

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
Regan 10/10 587 days 45.89 100%
Antje Kreuzer 7/10 1591 days 3.67 8%
Anna Stoehr 9/10 1625 days true 3.96 9%
Maria = Moller Hansen 10/10 2334 days true 2.58 6%
Bjorn Houlberg 10/10 2334 days true 2.58 6%
Klaus Petersen 9/10 2341 days true 2.56 6%
Rikke Petersen 9/10 2341 days true 2.56 6%
Steve Douthwaite 10/10 2767 days true 1.73 4%
Fahl 10/10 2777 days true 1.71 4%
Geoffrey Kuppens 9/10 3062 days true 1.15 3%
kiwifrenchy 8/10 3082 days 1.06 2%
Steve Eley 10/10 3153 days true 0.97 2%
Claudia Jackson and Geoffroy van Roelenbosch 8/10 3402 days true 0.46 1%
Thomas 10/10 3406 days true 0.48 1%
Jackie MacRostie 9/10 3409 days true 0.47 1%
Louise van der Hyden 8/10 3417 days true 0.43 1%
CarolynDawn 10/10 3570 days 0.16 0%
Michael 10/10 3794 days true 0.0 0%
djrogers 10/10 3867 days true 0.0 0%
Julie Seakins 9/10 3874 days 0.0 0%
Roeder Grit 10/10 3885 days true 0.0 0%
Ton Buil 10/10 3886 days true 0.0 0%
Lance 10/10 4149 days 0.0 0%
Pavel 9/10 4154 days true 0.0 0%
Heather 9/10 4154 days true 0.0 0%
Rick Rissewijck 10/10 4157 days 0.0 0%
Amanda Williams 10/10 4158 days 0.0 0%
CarolineR 9/10 4173 days true 0.0 0%
KarinB1 8/10 4173 days true 0.0 0%
Leidner 9/10 4194 days true 0.0 0%
Jason 8/10 4222 days true 0.0 0%
Groen 9/10 4230 days true 0.0 0%
Paul 10/10 4235 days true 0.0 0%
Birte 10/10 4238 days 0.0 0%
Georgina Mulligan 7/10 4438 days 0.0 0%
Alex309 10/10 4445 days 0.0 0%
Annie 7/10 4488 days true 0.0 0%
Paul McDonell 10/10 4510 days true 0.0 0%
Peter 8/10 4888 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 E-Ko Tours experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-2.00% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 125 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 -1.97%
198 -1.98%
199 -1.99%
200 -2.00%
201 -2.01%
202 -2.02%
203 -2.03%

Final Ranking Score

94%

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.