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

90.48%

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 10/10 661 days 34.85 100%
Nigel Jarvis 10/10 723 days 26.93 77%
Janneke van Krieken 8/10 1056 days true 4.98 14%
William Milligan-Manby 10/10 1195 days 4.8 14%
dan dalgleish 10/10 1301 days 4.6 13%
Melanie Farrell 9/10 1311 days true 4.58 13%
Charlotte 8/10 1338 days 4.3 12%
Vicki Robey 8/10 1402 days true 4.18 12%
Michal Za'heryuk 9/10 1422 days true 4.36 13%
Veronika Za'heryuk 9/10 1422 days true 4.36 13%
Thomas Nolwenn 9/10 1427 days true 4.35 12%
Manibod Vannaphone 10/10 1664 days true 3.89 11%
Luca Staudt 7/10 1667 days true 3.53 10%
Nancy Logan 8/10 1671 days true 3.68 11%
Friederike East 9/10 1692 days true 3.83 11%
Sabine Bergen 8/10 1709 days true 3.61 10%
Ken 5/10 2023 days true 2.58 7%
Fanny DeBon 7/10 2121 days true 2.72 8%
Ian Garner 9/10 2411 days true 2.42 7%
Laurene 5/10 2418 days true 1.95 6%
Guillaume 6/10 2422 days true 1.99 6%
Sarah Horn 9/10 2751 days true 1.76 5%
Sebastian Russell-Smits 10/10 2751 days true 1.76 5%
Leo 9/10 2857 days true 1.55 4%
Reinhard Stahl 10/10 2858 days true 1.55 4%
Reinhard Stahl 10/10 2858 days true 1.55 4%
Liz Marquart Scholtz 8/10 2864 days true 1.46 4%
Kerstin 9/10 2868 days true 1.53 4%
KDS_Holiday 10/10 2914 days 1.44 4%
Mark Westebring 7/10 3115 days true 0.95 3%
ToGy 1/10 3128 days 0.75 2%
Barry Baily 9/10 3141 days true 1.0 3%
Charlotte 9/10 3143 days true 0.99 3%
John Reynolds 10/10 3152 days true 0.97 3%
Ellen Jacobs 5/10 3155 days true 0.78 2%
Peter, Noelle & Susanne 6/10 3222 days true 0.7 2%
damaca 7/10 3280 days 0.66 2%
Oliver Berg 7/10 3477 days true 0.31 1%
Boi Sagarra 6/10 3477 days true 0.28 1%
Chris Ashton 8/10 3488 days true 0.3 1%
Edgar & Marilyn Berry 10/10 3490 days true 0.31 1%
John Taylor 10/10 3493 days true 0.31 1%
Ann Parry 9/10 3498 days true 0.3 1%
Peter 9/10 3499 days true 0.3 1%
David 9/10 3512 days true 0.27 1%
Rossiter 7/10 3515 days true 0.24 1%
Rosey834 8/10 3584 days 0.12 0%
Hans 8/10 3849 days true 0.0 0%
Michael Egli 9/10 3850 days true 0.0 0%
Aaron 5/10 3869 days true 0.0 0%
Mieke Knoops 7/10 3869 days true 0.0 0%
Tonny 8/10 3886 days true 0.0 0%
snodge 5/10 3887 days 0.0 0%
uleugel 8/10 3896 days true 0.0 0%
Len Daniell 9/10 3901 days true 0.0 0%
kevinp 7/10 3930 days true 0.0 0%
Anita de Boer 8/10 3951 days true 0.0 0%
Karin Linder 9/10 3953 days true 0.0 0%
richardh 8/10 4073 days true 0.0 0%
Christine Dadd 4/10 4180 days true 0.0 0%
MorganK 8/10 4184 days true 0.0 0%
arthurwa 10/10 4193 days true 0.0 0%
Robert 5/10 4216 days true 0.0 0%
KeziaB 9/10 4226 days true 0.0 0%
EleanorL 7/10 4226 days true 0.0 0%
VickiS 7/10 4226 days true 0.0 0%
Ian S 8/10 4242 days true 0.0 0%
MartinD 8/10 4251 days true 0.0 0%
straw64 8/10 4252 days 0.0 0%
Mark 3/10 4265 days true 0.0 0%
Debbie Mossman 8/10 4267 days 0.0 0%
Miranda 8/10 4269 days true 0.0 0%
Kern 7/10 4277 days true 0.0 0%
Sandra 8/10 4305 days true 0.0 0%
bobmcg 9/10 4305 days 0.0 0%
Bert 8/10 4311 days true 0.0 0%
Robin 8/10 4383 days true 0.0 0%
Annabelle 10/10 4402 days 0.0 0%
Heckter 9/10 4564 days true 0.0 0%
Amy Clark 10/10 4564 days true 0.0 0%
Claire 8/10 4579 days true 0.0 0%
Roger and Heather Smith 10/10 4598 days true 0.0 0%
Ondrej Kacena 10/10 4604 days true 0.0 0%
Roger & Margaret 9/10 4607 days true 0.0 0%
purplekat99 9/10 4649 days 0.0 0%
AndiJorgensen 5/10 4915 days true 0.0 0%
Rietveld 8/10 4951 days true 0.0 0%
Pope 9/10 4970 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

-3.10% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 72 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.

The Waitangi Treaty Grounds experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -3.05%
198 -3.06%
199 -3.08%
200 -3.10%
201 -3.11%
202 -3.13%
203 -3.14%

Final Ranking Score

87%

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.