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 Waitangi Treaty Grounds.

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

Waitangi Treaty Grounds

Valid Reviews

88 Valid Reviews

The Waitangi Treaty Grounds experience has a total of 88 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 88 valid reviews:

Rating Count Percentage
10/10 17
19%
9/10 23
26%
8/10 24
27%
7/10 11
13%
6/10 3
3%
5/10 7
8%
4/10 1
1%
3/10 1
1%
2/10 0
0%
1/10 1
1%

80.34% Average

The raw data average (mean) for all the Waitangi Treaty Grounds valid reviews is 80.34% and is based on 88 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

73 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 88 valid reviews, the experience has 73 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 73 face-to-face reviews:

Rating Count Percentage
10/10 11
15%
9/10 21
29%
8/10 20
27%
7/10 10
14%
6/10 3
4%
5/10 6
8%
4/10 1
1%
3/10 1
1%
2/10 0
0%
1/10 0
0%

80.00% Average

The raw data average (mean) for all the Waitangi Treaty Grounds face-to-face reviews is 80.00% and is based on 73 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

92.08%

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
Penny Bullock 10/10 453 days 67.48 100%
Nigel Jarvis 10/10 514 days 58.14 86%
Janneke van Krieken 8/10 847 days true 14.01 21%
William Milligan-Manby 10/10 987 days 6.85 10%
dan dalgleish 10/10 1093 days 5.0 7%
Melanie Farrell 9/10 1102 days true 4.99 7%
Charlotte 8/10 1129 days 4.69 7%
Vicki Robey 8/10 1193 days true 4.57 7%
Michal Za'heryuk 9/10 1213 days true 4.77 7%
Veronika Za'heryuk 9/10 1213 days true 4.77 7%
Thomas Nolwenn 9/10 1218 days true 4.76 7%
Manibod Vannaphone 10/10 1455 days true 4.3 6%
Luca Staudt 7/10 1458 days true 3.9 6%
Nancy Logan 8/10 1462 days true 4.07 6%
Friederike East 9/10 1483 days true 4.24 6%
Sabine Bergen 8/10 1500 days true 4.0 6%
Ken 5/10 1814 days true 2.91 4%
Fanny DeBon 7/10 1912 days true 3.1 5%
Ian Garner 9/10 2202 days true 2.83 4%
Laurene 5/10 2209 days true 2.28 3%
Guillaume 6/10 2213 days true 2.33 3%
Sarah Horn 9/10 2542 days true 2.17 3%
Sebastian Russell-Smits 10/10 2542 days true 2.17 3%
Leo 9/10 2648 days true 1.96 3%
Reinhard Stahl 10/10 2649 days true 1.96 3%
Reinhard Stahl 10/10 2649 days true 1.96 3%
Liz Marquart Scholtz 8/10 2655 days true 1.85 3%
Kerstin 9/10 2659 days true 1.94 3%
KDS_Holiday 10/10 2705 days 1.85 3%
Mark Westebring 7/10 2906 days true 1.32 2%
ToGy 1/10 2919 days 1.04 2%
Barry Baily 9/10 2932 days true 1.41 2%
Charlotte 9/10 2934 days true 1.4 2%
John Reynolds 10/10 2943 days true 1.38 2%
Ellen Jacobs 5/10 2946 days true 1.12 2%
Peter, Noelle & Susanne 6/10 3013 days true 1.03 2%
damaca 7/10 3071 days 1.03 2%
Oliver Berg 7/10 3268 days true 0.68 1%
Boi Sagarra 6/10 3268 days true 0.62 1%
Chris Ashton 8/10 3279 days true 0.69 1%
Edgar & Marilyn Berry 10/10 3281 days true 0.72 1%
John Taylor 10/10 3284 days true 0.72 1%
Ann Parry 9/10 3289 days true 0.71 1%
Peter 9/10 3290 days true 0.7 1%
David 9/10 3303 days true 0.68 1%
Rossiter 7/10 3306 days true 0.61 1%
Rosey834 8/10 3375 days 0.51 1%
Hans 8/10 3640 days true 0.02 0%
Michael Egli 9/10 3641 days true 0.02 0%
Aaron 5/10 3660 days true 0.0 0%
Mieke Knoops 7/10 3660 days true 0.0 0%
Tonny 8/10 3677 days true 0.0 0%
snodge 5/10 3678 days 0.0 0%
uleugel 8/10 3687 days true 0.0 0%
Len Daniell 9/10 3692 days true 0.0 0%
kevinp 7/10 3721 days true 0.0 0%
Anita de Boer 8/10 3742 days true 0.0 0%
Karin Linder 9/10 3744 days true 0.0 0%
richardh 8/10 3865 days true 0.0 0%
Christine Dadd 4/10 3972 days true 0.0 0%
MorganK 8/10 3976 days true 0.0 0%
arthurwa 10/10 3984 days true 0.0 0%
Robert 5/10 4008 days true 0.0 0%
KeziaB 9/10 4017 days true 0.0 0%
EleanorL 7/10 4017 days true 0.0 0%
VickiS 7/10 4017 days true 0.0 0%
Ian S 8/10 4034 days true 0.0 0%
MartinD 8/10 4042 days true 0.0 0%
straw64 8/10 4043 days 0.0 0%
Mark 3/10 4057 days true 0.0 0%
Debbie Mossman 8/10 4059 days 0.0 0%
Miranda 8/10 4061 days true 0.0 0%
Kern 7/10 4069 days true 0.0 0%
Sandra 8/10 4097 days true 0.0 0%
bobmcg 9/10 4097 days 0.0 0%
Bert 8/10 4102 days true 0.0 0%
Robin 8/10 4175 days true 0.0 0%
Annabelle 10/10 4194 days 0.0 0%
Heckter 9/10 4355 days true 0.0 0%
Amy Clark 10/10 4355 days true 0.0 0%
Claire 8/10 4370 days true 0.0 0%
Roger and Heather Smith 10/10 4389 days true 0.0 0%
Ondrej Kacena 10/10 4395 days true 0.0 0%
Roger & Margaret 9/10 4398 days true 0.0 0%
purplekat99 9/10 4440 days 0.0 0%
AndiJorgensen 5/10 4707 days true 0.0 0%
Rietveld 8/10 4742 days true 0.0 0%
Pope 9/10 4761 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 Waitangi Treaty Grounds 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 Waitangi Treaty Grounds 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 Waitangi Treaty Grounds 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

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.