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 Tongariro River Rafting.
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.
Tongariro River Rafting
Valid Reviews
171 Valid Reviews
The Tongariro River Rafting experience has a total of 172 reviews. There are 171 valid reviews that are included when calculating the ranking score and 1 invalid review 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 171 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 147 |
|
86% |
| 9/10 | 17 |
|
10% |
| 8/10 | 5 |
|
3% |
| 7/10 | 2 |
|
1% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
98.07% Average
The raw data average (mean) for all the Tongariro River Rafting valid reviews is 98.07% and is based on 171 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
14 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 171 valid reviews, the experience has 14 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 14 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 8 |
|
57% |
| 9/10 | 2 |
|
14% |
| 8/10 | 3 |
|
21% |
| 7/10 | 1 |
|
7% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
92.14% Average
The raw data average (mean) for all the Tongariro River Rafting face-to-face reviews is 92.14% and is based on 14 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
99.66%
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 |
|---|---|---|---|
| Vanessa Shankaran Tasker | 10/10 | 119 days | 100% |
| Lynda B | 10/10 | 181 days | 99% |
| V Buys | 10/10 | 425 days | 90% |
| Cody | 10/10 | 456 days | 89% |
| Madonna Thomson | 10/10 | 546 days | 84% |
| Amanda Thomson | 10/10 | 821 days | 62% |
| Peter Little | 10/10 | 850 days | 59% |
| Michaela Liff | 10/10 | 1094 days | 36% |
| Kusum | 10/10 | 1552 days | 9% |
| Betty Dunn | 10/10 | 1580 days | 8% |
| Ruth | 10/10 | 2159 days | 4% |
| Gary Koh | 10/10 | 2373 days | 4% |
| Jan | 10/10 | 2403 days | 4% |
| Alison B. | 10/10 | 2403 days | 4% |
| John Olsen | 10/10 | 2434 days | 4% |
| Peter | 10/10 | 2525 days | 4% |
| Ben | 10/10 | 2555 days | 3% |
| Ian | 10/10 | 2617 days | 3% |
| Gary Walker | 10/10 | 2617 days | 3% |
| Rowella Bacwaden | 10/10 | 2648 days | 3% |
| Eileen H | 10/10 | 2707 days | 3% |
| Brad | 10/10 | 2768 days | 3% |
| Jared London | 10/10 | 2799 days | 3% |
| Helen Turner | 10/10 | 2828 days | 3% |
| James | 10/10 | 2859 days | 3% |
| Isabelle_Qc | 10/10 | 2890 days | 3% |
| Laura | 10/10 | 2920 days | 3% |
| ACE Richardson | 10/10 | 2951 days | 3% |
| Thea :-) | 10/10 | 3013 days | 3% |
| William Webb | 10/10 | 3040 days | 3% |
| Katelyn Mills | 10/10 | 3041 days | 3% |
| Mrs Smith | 10/10 | 3041 days | 3% |
| Mel | 10/10 | 3041 days | 3% |
| Wayne Smith | 10/10 | 3041 days | 3% |
| Kim | 10/10 | 3071 days | 2% |
| Songyang Liu | 10/10 | 3071 days | 2% |
| Mark Haydon | 10/10 | 3405 days | 2% |
| Kathryn Sherlock | 10/10 | 3620 days | 1% |
| Cherie Kemp | 10/10 | 3620 days | 1% |
| Renee Kemp | 10/10 | 3620 days | 1% |
| Patrick McIvor | 10/10 | 3742 days | 1% |
| Lengxi | 10/10 | 3769 days | 1% |
| Uschi Pongratz | 10/10 | 3777 days | 1% |
| Jessica Ruhland | 10/10 | 3777 days | 1% |
| Paul | 7/10 | 3782 days | 1% |
| Philip Piel | 8/10 | 3782 days | 1% |
| Chiara | 8/10 | 3782 days | 1% |
| Jess | 10/10 | 3819 days | 1% |
| TashJ | 10/10 | 3833 days | 1% |
| Funny Schutt | 10/10 | 3833 days | 1% |
| Craig McCarthy | 10/10 | 3864 days | 1% |
| Tim K | 10/10 | 3864 days | 1% |
| Jack Shearer | 10/10 | 3986 days | 1% |
| Monika M | 10/10 | 4016 days | 1% |
| Ian Wilmot | 10/10 | 4077 days | 0% |
| Rodger Lamb | 10/10 | 4108 days | 0% |
| Leah Kyllo | 10/10 | 4167 days | 0% |
| Juliet Battersby | 10/10 | 4167 days | 0% |
| Chris C | 10/10 | 4228 days | 0% |
| Jessica | 10/10 | 4320 days | 0% |
| Mike Hollows | 10/10 | 4412 days | 1% |
| Monique Hollows | 10/10 | 4473 days | 1% |
| Thomas Subritzky | 10/10 | 4474 days | 1% |
| hmsteele | 10/10 | 4502 days | 1% |
| andy godfrey | 9/10 | 4533 days | 1% |
| Chris Nisbet | 8/10 | 4533 days | 1% |
| Michelle Sanders | 9/10 | 4564 days | 1% |
| phil costello | 8/10 | 4594 days | 1% |
| Robyn Orchard | 10/10 | 4625 days | 1% |
| Gisele Phillips | 9/10 | 4625 days | 1% |
| E Wall | 10/10 | 4625 days | 1% |
| Julie | 10/10 | 4654 days | 1% |
| Little | 10/10 | 4654 days | 1% |
| Grahame Keast | 10/10 | 4685 days | 1% |
| Linda Bates | 10/10 | 4685 days | 1% |
| Morgan Buckingham | 10/10 | 4685 days | 1% |
| Bertiethebus | 10/10 | 4808 days | 1% |
| Julian Roots | 10/10 | 4839 days | 1% |
| Lynette Nicolson | 10/10 | 4898 days | 1% |
| RENs Rens | 10/10 | 4898 days | 1% |
| CKDNH | 10/10 | 4959 days | 1% |
| mattus | 9/10 | 4959 days | 1% |
| Ken | 10/10 | 4959 days | 1% |
| Kathy27 | 10/10 | 4959 days | 1% |
| ladywithplants | 9/10 | 5019 days | 1% |
| princessliz | 10/10 | 5019 days | 1% |
| lariley | 9/10 | 5019 days | 1% |
| richardp | 10/10 | 5050 days | 1% |
| prasanth03 | 10/10 | 5081 days | 1% |
| EllieW | 10/10 | 5111 days | 1% |
| Terry | 10/10 | 5173 days | 1% |
| Borderland | 10/10 | 5204 days | 1% |
| jimbob | 10/10 | 5204 days | 1% |
| mopheim | 10/10 | 5204 days | 1% |
| Mats Harstedt | 9/10 | 5213 days | 0% |
| KateS | 10/10 | 5233 days | 1% |
| RubberDuck | 10/10 | 5264 days | 1% |
| Red_Hurring | 10/10 | 5264 days | 1% |
| travelpam | 10/10 | 5264 days | 1% |
| barjjake | 9/10 | 5264 days | 1% |
| cindyd | 10/10 | 5295 days | 1% |
| webstersuk | 10/10 | 5295 days | 1% |
| pezalone | 10/10 | 5295 days | 1% |
| WiseOwl | 10/10 | 5295 days | 1% |
| mausandhari | 10/10 | 5295 days | 1% |
| Pauline | 10/10 | 5325 days | 1% |
| JadesWorld | 9/10 | 5325 days | 1% |
| utstarfish | 10/10 | 5325 days | 1% |
| johnco78 | 10/10 | 5325 days | 1% |
| jrwholey | 10/10 | 5356 days | 1% |
| ShawnM | 10/10 | 5356 days | 1% |
| Tarsh | 10/10 | 5356 days | 1% |
| lindahealey | 10/10 | 5356 days | 1% |
| campbell_steven | 10/10 | 5385 days | 1% |
| markrussell | 10/10 | 5385 days | 1% |
| Bayneer | 10/10 | 5385 days | 1% |
| jaspreetsohal86 | 10/10 | 5385 days | 1% |
| kiwiholly | 10/10 | 5385 days | 1% |
| garethd1980 | 10/10 | 5385 days | 1% |
| Mulliano | 10/10 | 5385 days | 1% |
| CathyK | 10/10 | 5416 days | 1% |
| silver | 10/10 | 5416 days | 1% |
| Meyerclan | 10/10 | 5447 days | 1% |
| poetania | 10/10 | 5477 days | 1% |
| southernboy611 | 10/10 | 5477 days | 1% |
| EvilChris | 10/10 | 5508 days | 1% |
| nia427 | 10/10 | 5539 days | 1% |
| Mags620 | 10/10 | 5539 days | 1% |
| deanblackburn | 10/10 | 5539 days | 1% |
| Heatherorchard | 10/10 | 5570 days | 1% |
| BeetleBom | 10/10 | 5570 days | 1% |
| AnnaBain | 10/10 | 5598 days | 1% |
| geezer | 10/10 | 5598 days | 1% |
| Jen | 10/10 | 5598 days | 1% |
| busheybrew | 10/10 | 5598 days | 1% |
| painter47 | 10/10 | 5629 days | 1% |
| ganbji | 9/10 | 5629 days | 1% |
| charles | 10/10 | 5660 days | 1% |
| alanos | 9/10 | 5660 days | 1% |
| teeneelz | 10/10 | 5660 days | 1% |
| Douggie | 7/10 | 5750 days | 1% |
| celticcolleen | 10/10 | 5873 days | 1% |
| MarcyMark | 10/10 | 5904 days | 1% |
| Susiekj | 10/10 | 5935 days | 1% |
| Kirsten | 10/10 | 5963 days | 1% |
| Ravi Chand | 10/10 | 5994 days | 1% |
| Sika | 10/10 | 5994 days | 1% |
| anthony mcclaren | 9/10 | 5994 days | 1% |
| menzel | 10/10 | 6008 days | 0% |
| joannaw | 10/10 | 6010 days | 0% |
| meisterbaumann | 10/10 | 6025 days | 1% |
| Stefanie Micheler | 10/10 | 6036 days | 0% |
| Aussies | 10/10 | 6055 days | 1% |
| Jake Volle | 10/10 | 6055 days | 1% |
| Jess Woods | 10/10 | 6115 days | 1% |
| emmah | 9/10 | 6151 days | 0% |
| Dave Roebuck | 10/10 | 6177 days | 1% |
| steph_m | 9/10 | 6278 days | 1% |
| JasonL | 8/10 | 6281 days | 0% |
| Tanja Kirschmann | 10/10 | 6282 days | 1% |
| MicheyJ | 10/10 | 6284 days | 1% |
| caz | 10/10 | 6305 days | 1% |
| Cilla | 10/10 | 6310 days | 0% |
| Hannah | 10/10 | 6312 days | 1% |
| karlijn schaap | 10/10 | 6389 days | 1% |
| Murray | 10/10 | 6419 days | 1% |
| Jan Burch | 9/10 | 6531 days | 1% |
| zane mirfin | 10/10 | 6588 days | 1% |
| becky | 10/10 | 6616 days | 1% |
| dave | 9/10 | 6644 days | 1% |
| shinylight | 9/10 | 6676 days | 1% |
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 Tongariro River Rafting experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-1.20% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 104 days. However the Tongariro River Rafting 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 Tongariro River Rafting experience has been adjusted for 96 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 93 | -1.16% |
| 94 | -1.17% |
| 95 | -1.18% |
| 96 | -1.20% |
| 97 | -1.21% |
| 98 | -1.22% |
| 99 | -1.23% |
| … | … |
Balancing Adjustment
0.13% 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
99%
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.