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

87.27%

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
Penny Bullock 10/10 734 days 100%
Nigel Jarvis 10/10 795 days 75%
Janneke van Krieken 8/10 1128 days 18%
William Milligan-Manby 10/10 1268 days 18%
dan dalgleish 10/10 1374 days 17%
Melanie Farrell 9/10 1383 days 17%
Charlotte 8/10 1410 days 16%
Vicki Robey 8/10 1474 days 15%
Michal Za'heryuk 9/10 1494 days 16%
Veronika Za'heryuk 9/10 1494 days 16%
Thomas Nolwenn 9/10 1499 days 16%
Manibod Vannaphone 10/10 1736 days 14%
Luca Staudt 7/10 1739 days 13%
Nancy Logan 8/10 1743 days 13%
Friederike East 9/10 1764 days 14%
Sabine Bergen 8/10 1781 days 13%
Ken 5/10 2095 days 9%
Fanny DeBon 7/10 2193 days 10%
Ian Garner 9/10 2483 days 9%
Laurene 5/10 2490 days 7%
Guillaume 6/10 2494 days 7%
Sarah Horn 9/10 2823 days 6%
Sebastian Russell-Smits 10/10 2823 days 6%
Leo 9/10 2929 days 5%
Reinhard Stahl 10/10 2930 days 5%
Reinhard Stahl 10/10 2930 days 5%
Liz Marquart Scholtz 8/10 2936 days 5%
Kerstin 9/10 2940 days 5%
KDS_Holiday 10/10 2986 days 5%
Mark Westebring 7/10 3187 days 3%
ToGy 1/10 3200 days 2%
Barry Baily 9/10 3213 days 3%
Charlotte 9/10 3215 days 3%
John Reynolds 10/10 3224 days 3%
Ellen Jacobs 5/10 3227 days 2%
Peter, Noelle & Susanne 6/10 3294 days 2%
damaca 7/10 3352 days 2%
Oliver Berg 7/10 3549 days 0%
Boi Sagarra 6/10 3549 days 0%
Chris Ashton 8/10 3560 days 0%
Edgar & Marilyn Berry 10/10 3562 days 0%
John Taylor 10/10 3565 days 0%
Ann Parry 9/10 3570 days 0%
Peter 9/10 3571 days 0%
David 9/10 3584 days 0%
Rossiter 7/10 3587 days 0%
Rosey834 8/10 3656 days 3%
Hans 8/10 3921 days 3%
Michael Egli 9/10 3922 days 3%
Aaron 5/10 3941 days 3%
Mieke Knoops 7/10 3941 days 3%
Tonny 8/10 3958 days 3%
snodge 5/10 3959 days 3%
uleugel 8/10 3968 days 3%
Len Daniell 9/10 3973 days 3%
kevinp 7/10 4002 days 3%
Anita de Boer 8/10 4023 days 3%
Karin Linder 9/10 4025 days 3%
richardh 8/10 4146 days 3%
Christine Dadd 4/10 4253 days 3%
MorganK 8/10 4257 days 3%
arthurwa 10/10 4265 days 3%
Robert 5/10 4289 days 3%
KeziaB 9/10 4298 days 3%
EleanorL 7/10 4298 days 3%
VickiS 7/10 4298 days 3%
Ian S 8/10 4314 days 3%
MartinD 8/10 4323 days 3%
straw64 8/10 4324 days 3%
Mark 3/10 4337 days 3%
Debbie Mossman 8/10 4340 days 3%
Miranda 8/10 4342 days 3%
Kern 7/10 4350 days 3%
Sandra 8/10 4378 days 3%
bobmcg 9/10 4378 days 3%
Bert 8/10 4383 days 3%
Robin 8/10 4456 days 3%
Annabelle 10/10 4475 days 3%
Heckter 9/10 4636 days 3%
Amy Clark 10/10 4636 days 3%
Claire 8/10 4651 days 3%
Roger and Heather Smith 10/10 4670 days 3%
Ondrej Kacena 10/10 4676 days 3%
Roger & Margaret 9/10 4679 days 3%
purplekat99 9/10 4721 days 3%
AndiJorgensen 5/10 4988 days 3%
Rietveld 8/10 5023 days 3%
Pope 9/10 5042 days 3%

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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 42 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 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Final Ranking Score

83%

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.