Kia ora, 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 Rotorua 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.
Rotorua Museum
Valid Reviews
46 Valid Reviews
The Rotorua Museum experience has a total of 46 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 46 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 11 |
|
24% |
| 9/10 | 7 |
|
15% |
| 8/10 | 11 |
|
24% |
| 7/10 | 8 |
|
17% |
| 6/10 | 5 |
|
11% |
| 5/10 | 4 |
|
9% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
79.78% Average
The raw data average (mean) for all the Rotorua Museum valid reviews is 79.78% and is based on 46 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
44 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 46 valid reviews, the experience has 44 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 44 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 10 |
|
23% |
| 9/10 | 7 |
|
16% |
| 8/10 | 11 |
|
25% |
| 7/10 | 7 |
|
16% |
| 6/10 | 5 |
|
11% |
| 5/10 | 4 |
|
9% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
79.55% Average
The raw data average (mean) for all the Rotorua Museum face-to-face reviews is 79.55% and is based on 44 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
80.95%
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 |
|---|---|---|---|
| Sylvain Chanton | 10/10 | 3335 days | 100% |
| Camilla Geert | 6/10 | 3555 days | 49% |
| Mark Rosema | 7/10 | 3627 days | 47% |
| Soren and Inelase Lindhardbell | 10/10 | 4743 days | 19% |
| Soren and Inelase Lindhardbell | 10/10 | 4743 days | 19% |
| Timo Maschke | 10/10 | 4752 days | 19% |
| Leo | 9/10 | 4765 days | 18% |
| Moss | 9/10 | 5021 days | 18% |
| Paul & Jayne Smith | 5/10 | 5046 days | 0% |
| Barry Baily | 9/10 | 5049 days | 18% |
| Colin Philpott | 9/10 | 5058 days | 18% |
| Kim Thorsted | 8/10 | 5059 days | 17% |
| Stig Domander | 8/10 | 5078 days | 17% |
| Theresa | 10/10 | 5143 days | 19% |
| Anne | 10/10 | 5404 days | 19% |
| F Horrex | 8/10 | 5421 days | 17% |
| David | 10/10 | 5492 days | 19% |
| Sophie & Joffrey | 5/10 | 5701 days | 0% |
| Pam Know | 7/10 | 5762 days | 13% |
| Peter Essink | 5/10 | 5859 days | 0% |
| bondd | 8/10 | 5966 days | 17% |
| CeesVanW | 8/10 | 6101 days | 17% |
| Arjan Muis | 7/10 | 6103 days | 13% |
| Marion | 6/10 | 6105 days | 8% |
| Tobias Wanger | 8/10 | 6107 days | 17% |
| Christian Troendle | 6/10 | 6107 days | 8% |
| Ian S | 6/10 | 6150 days | 8% |
| MartinD | 7/10 | 6159 days | 13% |
| John | 9/10 | 6163 days | 18% |
| Ko | 8/10 | 6165 days | 17% |
| Danielle | 5/10 | 6165 days | 0% |
| Sabrina | 10/10 | 6169 days | 19% |
| Christine | 7/10 | 6170 days | 13% |
| Michael | 8/10 | 6181 days | 17% |
| Daniel | 10/10 | 6214 days | 19% |
| Tony | 10/10 | 6218 days | 19% |
| Liz | 8/10 | 6240 days | 17% |
| Sanne Jonker | 6/10 | 6488 days | 8% |
| Jo and Tony | 10/10 | 6493 days | 19% |
| Wouter Sluitnan | 8/10 | 6494 days | 17% |
| catzmagic | 7/10 | 6495 days | 13% |
| Lindsey Woosnam | 7/10 | 6544 days | 13% |
| ranker_46 | 9/10 | 6703 days | 18% |
| Helen | 8/10 | 6819 days | 17% |
| ShoshanaAbrams | 7/10 | 6822 days | 13% |
| Fran | 9/10 | 6831 days | 18% |
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 Rotorua Museum experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.06% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Rotorua 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 Rotorua Museum experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.00% |
| 198 | -4.02% |
| 199 | -4.04% |
| 200 | -4.06% |
| 201 | -4.08% |
| 202 | -4.10% |
| 203 | -4.12% |
| … | … |
Balancing Adjustment
3.96% 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 customers 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
81%
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.