Hi, 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 Wellington Botanic Gardens.

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.

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Cymen Crick's avatar

Cymen Crick

Rankers Owner

Wellington Botanic Gardens

Valid Reviews

70 Valid Reviews

The Wellington Botanic Gardens experience has a total of 70 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 70 valid reviews:

Rating Count Percentage
10/10 16
23%
9/10 23
33%
8/10 20
29%
7/10 10
14%
6/10 0
0%
5/10 1
1%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

86.00% Average

The raw data average (mean) for all the Wellington Botanic Gardens valid reviews is 86.00% and is based on 70 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

61 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 70 valid reviews, the experience has 61 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 61 face-to-face reviews:

Rating Count Percentage
10/10 13
21%
9/10 21
34%
8/10 18
30%
7/10 8
13%
6/10 0
0%
5/10 1
2%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

85.90% Average

The raw data average (mean) for all the Wellington Botanic Gardens face-to-face reviews is 85.90% and is based on 61 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

87.03%

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
Mike Fricker 10/10 2333 days 100%
Helna Saumanova 10/10 2961 days 69%
Richard 8/10 3009 days 65%
Sabrina and Hannes 9/10 3028 days 65%
Selma Franke 9/10 3032 days 65%
Su Jung Han 10/10 3252 days 55%
Fanny 9/10 3253 days 54%
Hector Sharp 7/10 3253 days 51%
Andre 10/10 3269 days 54%
Sybille 10/10 3269 days 54%
Marine 8/10 3270 days 53%
Paul Gaylon 10/10 3273 days 54%
Eberhard 8/10 3274 days 53%
Adam Pulkrabek 8/10 3281 days 52%
Olga Barathova 9/10 3281 days 53%
Melissa Fuster 7/10 3318 days 48%
renee verwey 9/10 3325 days 51%
Lea 8/10 3365 days 48%
Bob Fontaine 7/10 3451 days 42%
Melvin Spear 9/10 3656 days 35%
Manuela Opprecht 10/10 3682 days 34%
Sam Bruylant 9/10 3993 days 18%
Vera Kreipe 8/10 4013 days 17%
Jennifer Garner 10/10 4021 days 17%
Dana 10/10 4026 days 17%
Frederic Gazzarin 9/10 4032 days 16%
Patricia Gazzarin 10/10 4032 days 16%
Ruth Watkin 9/10 4032 days 16%
GN100 8/10 4034 days 16%
Julia Bonisch 7/10 4051 days 14%
Verena 9/10 4364 days 0%
Hans 9/10 4453 days 24%
Anne and John 9/10 4462 days 24%
Jen Sweeting 8/10 4725 days 24%
Duncan Mallison 7/10 4744 days 23%
Richard Sutherland 5/10 4747 days 18%
Graham Platt 8/10 4747 days 24%
R E Webb 9/10 4750 days 24%
Diana Allan 9/10 4754 days 24%
Lepied 8/10 4754 days 24%
Graham Swinyard 7/10 4761 days 23%
CMJ 8/10 4798 days 24%
scampr 8/10 4798 days 24%
hendrik king 7/10 4829 days 23%
Steve Eley 9/10 4838 days 24%
Willem & Lilian 8/10 4838 days 24%
Curry 10/10 4841 days 24%
Herman Plasman 8/10 4844 days 24%
R & M Willows 10/10 4846 days 24%
Elke & Charlotte 7/10 4849 days 23%
Malcolm Jones 8/10 5097 days 24%
Kimberly St Louis 10/10 5118 days 24%
Claire Hoyland 8/10 5119 days 24%
Cara Dungay 7/10 5120 days 23%
John Allen 9/10 5127 days 24%
Tanner 10/10 5127 days 24%
John Simpson 8/10 5129 days 24%
Nicole 10/10 5224 days 24%
Haupt 9/10 5459 days 24%
Herrmann 9/10 5472 days 24%
Susan & Richard 10/10 5472 days 24%
Henrik Plichta 8/10 5478 days 24%
Jess Laver 9/10 5482 days 24%
Robb Howland 9/10 5493 days 24%
Bram-Jan M 8/10 5496 days 24%
Lamb 9/10 5496 days 24%
Nigel Armstrong 9/10 5508 days 24%
Ulyate 7/10 5570 days 23%
Kaye 8/10 5803 days 24%
Christian Troendle 9/10 5809 days 24%

Adjustments

No Adjustment

Several adjustments to the weighted average may be added to improve relevancy and credibility. Wellington Botanic Gardens does not meet the criteria for any of these adjustments to apply.

Balancing Adjustment

1.45% Adjustment

Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.

You won't be surprised to learn that disgruntled folk are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.

We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.

Final Ranking Score

88%

The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.