Hi, 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 TSS Earnslaw Cruise.
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.
TSS Earnslaw Cruise
Valid Reviews
80 Valid Reviews
The TSS Earnslaw Cruise experience has a total of 80 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 80 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 27 |
|
34% |
| 9/10 | 27 |
|
34% |
| 8/10 | 15 |
|
19% |
| 7/10 | 8 |
|
10% |
| 6/10 | 0 |
|
0% |
| 5/10 | 1 |
|
1% |
| 4/10 | 2 |
|
3% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
87.75% Average
The raw data average (mean) for all the TSS Earnslaw Cruise valid reviews is 87.75% and is based on 80 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
62 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 80 valid reviews, the experience has 62 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 62 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 17 |
|
27% |
| 9/10 | 23 |
|
37% |
| 8/10 | 13 |
|
21% |
| 7/10 | 8 |
|
13% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 1 |
|
2% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
87.26% Average
The raw data average (mean) for all the TSS Earnslaw Cruise face-to-face reviews is 87.26% and is based on 62 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
88.80%
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 |
|---|---|---|---|
| Vicki Hoskinson | 10/10 | 2543 days | 100% |
| Lisa Peric | 9/10 | 2787 days | 86% |
| Emma Philpott | 9/10 | 3260 days | 60% |
| Chris | 9/10 | 3684 days | 37% |
| Rachel S | 4/10 | 3973 days | 14% |
| Mark and Kim Vincent | 9/10 | 4066 days | 16% |
| Ian Stanbury | 10/10 | 4370 days | 0% |
| Colin Billington | 4/10 | 4392 days | 18% |
| GN100 | 9/10 | 4396 days | 27% |
| Michael Nolan | 8/10 | 4763 days | 27% |
| Mike Edwards | 8/10 | 4810 days | 27% |
| Jurgen | 8/10 | 4835 days | 27% |
| David | 5/10 | 4855 days | 21% |
| sandytemp22 | 10/10 | 5069 days | 27% |
| Lucy Duffy | 10/10 | 5103 days | 27% |
| Ian Bailey | 9/10 | 5109 days | 27% |
| Hayley Atkinson | 10/10 | 5111 days | 27% |
| Lyn Deavin | 7/10 | 5112 days | 25% |
| Inge Davbbert | 10/10 | 5112 days | 27% |
| Tom Connis | 10/10 | 5128 days | 27% |
| qofd | 10/10 | 5405 days | 27% |
| AJ van Pelt | 8/10 | 5443 days | 27% |
| Julie | 10/10 | 5448 days | 27% |
| Malcolm McLean | 7/10 | 5456 days | 25% |
| Rob Hitsert | 9/10 | 5458 days | 27% |
| Stephen Shearer | 10/10 | 5463 days | 27% |
| Alice Galley | 9/10 | 5469 days | 27% |
| Van den Borne | 7/10 | 5480 days | 25% |
| Bahner | 9/10 | 5482 days | 27% |
| Robert Cox | 8/10 | 5485 days | 27% |
| Wijnhoven | 9/10 | 5491 days | 27% |
| Rosey834 | 9/10 | 5556 days | 27% |
| aggiemary04 | 10/10 | 5617 days | 27% |
| animal_end | 10/10 | 5770 days | 27% |
| nuwee | 10/10 | 5800 days | 27% |
| Russ Turner | 10/10 | 5817 days | 27% |
| Brian Morris | 9/10 | 5840 days | 27% |
| Gordon and Joyce | 10/10 | 5841 days | 27% |
| th schuermann | 10/10 | 5841 days | 27% |
| Tony X | 8/10 | 5854 days | 27% |
| R Gilge | 10/10 | 5855 days | 27% |
| Ake Erlandsson | 8/10 | 5855 days | 27% |
| Paul | 9/10 | 5855 days | 27% |
| Luternauer | 9/10 | 5858 days | 27% |
| Kevin and Teresa | 8/10 | 5859 days | 27% |
| Omar Frenchy | 9/10 | 5868 days | 27% |
| stevnba | 7/10 | 5906 days | 25% |
| Gebert | 9/10 | 5932 days | 27% |
| Casarotti Luana | 10/10 | 5933 days | 27% |
| TomL | 8/10 | 5951 days | 27% |
| nickm | 10/10 | 6120 days | 27% |
| Dirk | 9/10 | 6164 days | 27% |
| Eckhard Koepper | 9/10 | 6177 days | 27% |
| Hans | 10/10 | 6182 days | 27% |
| Trevor | 10/10 | 6208 days | 27% |
| Yunker | 10/10 | 6213 days | 27% |
| john west | 7/10 | 6233 days | 25% |
| HollyB | 10/10 | 6347 days | 27% |
| suedavies | 10/10 | 6348 days | 27% |
| Zane | 10/10 | 6351 days | 27% |
| Astrid Snippe | 8/10 | 6507 days | 27% |
| James Gibbs | 7/10 | 6507 days | 25% |
| Anke Bohrer | 10/10 | 6512 days | 27% |
| Judy Williamson | 9/10 | 6513 days | 27% |
| Toni Keown | 9/10 | 6520 days | 27% |
| Jennifer Baulch | 9/10 | 6541 days | 27% |
| Linda and Peter | 8/10 | 6544 days | 27% |
| Ria | 9/10 | 6552 days | 27% |
| Andreas Brett | 8/10 | 6558 days | 27% |
| Lisa Tame | 8/10 | 6566 days | 27% |
| Charles Price | 9/10 | 6569 days | 27% |
| Cole Penelope | 10/10 | 6569 days | 27% |
| Roger & Margaret | 8/10 | 6579 days | 27% |
| Bronwyn Gaby | 9/10 | 6611 days | 27% |
| Sue | 7/10 | 6883 days | 25% |
| sven | 9/10 | 6890 days | 27% |
| Schranger | 8/10 | 6902 days | 27% |
| Roy | 9/10 | 6912 days | 27% |
| beesom | 7/10 | 6931 days | 25% |
| pfiffner | 9/10 | 6947 days | 27% |
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 TSS Earnslaw Cruise experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 52 days. However the TSS Earnslaw Cruise 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 TSS Earnslaw Cruise experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.09% |
| 198 | -4.11% |
| 199 | -4.13% |
| 200 | -4.15% |
| 201 | -4.17% |
| 202 | -4.19% |
| 203 | -4.21% |
| … | … |
Balancing Adjustment
1.89% 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
87%
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.