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 Canterbury Museum.

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

Canterbury Museum

Valid Reviews

66 Valid Reviews

The Canterbury Museum experience has a total of 66 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 66 valid reviews:

Rating Count Percentage
10/10 20
30%
9/10 19
29%
8/10 13
20%
7/10 11
17%
6/10 2
3%
5/10 1
2%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

86.21% Average

The raw data average (mean) for all the Canterbury Museum valid reviews is 86.21% and is based on 66 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

56 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 66 valid reviews, the experience has 56 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 56 face-to-face reviews:

Rating Count Percentage
10/10 15
27%
9/10 15
27%
8/10 13
23%
7/10 10
18%
6/10 2
4%
5/10 1
2%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

85.00% Average

The raw data average (mean) for all the Canterbury Museum face-to-face reviews is 85.00% and is based on 56 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

87.00%

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
Susanne 9/10 1278 days true 4.64 100%
Zak Jan 7/10 1317 days true 4.15 90%
Tereza Nemeckova 10/10 1326 days true 4.55 98%
Anna 9/10 1332 days true 4.54 98%
Anna Urbanova 8/10 1364 days true 4.25 92%
Melle Eleinga 8/10 1489 days true 4.02 87%
Camilla Geert 7/10 1573 days true 3.7 80%
Madelaine Sirch 9/10 1574 days true 4.06 88%
Lisa Fenzl 6/10 1581 days true 3.36 72%
Lionel Seramis 9/10 1599 days true 4.01 86%
Anna Guttle 8/10 1635 days true 3.75 81%
Tarillon Family 9/10 1949 days true 3.33 72%
Kilian Vos 7/10 2034 days true 2.88 62%
Ara Moore-Tuwhangai 10/10 2232 days 2.77 60%
angela neilsen 10/10 2232 days 2.77 60%
Manuela 9/10 2293 days true 2.66 57%
Siobhan Mee 10/10 2323 days true 2.6 56%
Fenna Newmann 8/10 2331 days true 2.45 53%
Mara K 9/10 2352 days 2.54 55%
Julien de la lande 8/10 2365 days true 2.39 51%
Aude Moulin 10/10 2365 days true 2.51 54%
Claire Lieval 10/10 2371 days true 2.5 54%
Pia Pitkala 9/10 2678 days true 1.9 41%
Kevin Tranter 9/10 2696 days true 1.87 40%
Peter Simpson 10/10 2717 days 1.83 39%
Mathieu Brias 8/10 2735 days true 1.7 37%
Eric and Jen Popma 10/10 2789 days true 1.68 36%
TheClan 10/10 2870 days 1.53 33%
Matthias Angela 7/10 3048 days true 1.07 23%
Signe Kaspersen 10/10 3048 days true 1.18 25%
Jaap & Susanne 9/10 3063 days true 1.15 25%
Rene Jakel 9/10 3416 days true 0.46 10%
Elise van Haastert 9/10 3419 days true 0.45 10%
Stevenson 10/10 3441 days true 0.41 9%
Friedli Manuela 10/10 3443 days true 0.41 9%
Rosey834 10/10 3479 days 0.33 7%
Janny en Bert 8/10 3775 days true 0.0 0%
johnandgin 10/10 3785 days true 0.0 0%
Tanya Fitzgibbon 5/10 3786 days true 0.0 0%
Dutertre Annaboue 7/10 3786 days true 0.0 0%
Jules 7/10 3810 days true 0.0 0%
Rob 9/10 3811 days true 0.0 0%
Frances Hay 8/10 3812 days true 0.0 0%
Suzanne 9/10 3936 days 0.0 0%
bertel 10/10 4002 days true 0.0 0%
DustyLaptop 9/10 4058 days 0.0 0%
TillE412 10/10 4103 days true 0.0 0%
geoffelizabeth 9/10 4119 days true 0.0 0%
MarkP 8/10 4119 days true 0.0 0%
Visken 10/10 4163 days true 0.0 0%
David_H 8/10 4178 days true 0.0 0%
Temo 7/10 4368 days true 0.0 0%
Georgina Mulligan 7/10 4439 days 0.0 0%
Sandra Verbaarschot 9/10 4499 days true 0.0 0%
Yayami Kimura 7/10 4502 days true 0.0 0%
Ray 10/10 4505 days true 0.0 0%
Eon Alers 7/10 4509 days true 0.0 0%
Orla Hansen 10/10 4511 days true 0.0 0%
Paul McDonell 8/10 4511 days true 0.0 0%
Jurgen Westphal 8/10 4519 days true 0.0 0%
Roger & Margaret 9/10 4520 days 0.0 0%
Matthieu Gernez 6/10 4520 days true 0.0 0%
Withkin 10/10 4520 days true 0.0 0%
Wayne Best 8/10 4555 days true 0.0 0%
Gabriel Faber 9/10 4594 days true 0.0 0%
Renee 7/10 4859 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 Canterbury Museum 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 Canterbury Museum 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 Canterbury Museum 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

85%

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.