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
99.64%
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 | 240 days | 100% |
| Lynda B | 10/10 | 302 days | 98% |
| V Buys | 10/10 | 546 days | 86% |
| Cody | 10/10 | 577 days | 84% |
| Madonna Thomson | 10/10 | 667 days | 77% |
| Amanda Thomson | 10/10 | 942 days | 51% |
| Peter Little | 10/10 | 971 days | 48% |
| Michaela Liff | 10/10 | 1216 days | 27% |
| Kusum | 10/10 | 1673 days | 6% |
| Betty Dunn | 10/10 | 1701 days | 6% |
| Ruth | 10/10 | 2281 days | 4% |
| Gary Koh | 10/10 | 2494 days | 4% |
| Jan | 10/10 | 2524 days | 4% |
| Alison B. | 10/10 | 2524 days | 4% |
| John Olsen | 10/10 | 2555 days | 4% |
| Peter | 10/10 | 2647 days | 3% |
| Ben | 10/10 | 2677 days | 3% |
| Ian | 10/10 | 2738 days | 3% |
| Gary Walker | 10/10 | 2738 days | 3% |
| Rowella Bacwaden | 10/10 | 2769 days | 3% |
| Eileen H | 10/10 | 2828 days | 3% |
| Brad | 10/10 | 2889 days | 3% |
| Jared London | 10/10 | 2920 days | 3% |
| Helen Turner | 10/10 | 2950 days | 3% |
| James | 10/10 | 2981 days | 3% |
| Isabelle_Qc | 10/10 | 3012 days | 3% |
| Laura | 10/10 | 3042 days | 3% |
| ACE Richardson | 10/10 | 3073 days | 3% |
| Thea :-) | 10/10 | 3134 days | 2% |
| William Webb | 10/10 | 3161 days | 2% |
| Katelyn Mills | 10/10 | 3162 days | 2% |
| Mrs Smith | 10/10 | 3162 days | 2% |
| Mel | 10/10 | 3162 days | 2% |
| Wayne Smith | 10/10 | 3162 days | 2% |
| Kim | 10/10 | 3192 days | 2% |
| Songyang Liu | 10/10 | 3192 days | 2% |
| Mark Haydon | 10/10 | 3526 days | 2% |
| Kathryn Sherlock | 10/10 | 3741 days | 1% |
| Cherie Kemp | 10/10 | 3741 days | 1% |
| Renee Kemp | 10/10 | 3741 days | 1% |
| Patrick McIvor | 10/10 | 3863 days | 1% |
| Lengxi | 10/10 | 3890 days | 1% |
| Uschi Pongratz | 10/10 | 3898 days | 1% |
| Jessica Ruhland | 10/10 | 3898 days | 1% |
| Paul | 7/10 | 3903 days | 0% |
| Philip Piel | 8/10 | 3903 days | 1% |
| Chiara | 8/10 | 3903 days | 1% |
| Jess | 10/10 | 3940 days | 0% |
| TashJ | 10/10 | 3954 days | 1% |
| Funny Schutt | 10/10 | 3954 days | 1% |
| Craig McCarthy | 10/10 | 3985 days | 1% |
| Tim K | 10/10 | 3985 days | 1% |
| Jack Shearer | 10/10 | 4107 days | 0% |
| Monika M | 10/10 | 4138 days | 0% |
| Ian Wilmot | 10/10 | 4198 days | 0% |
| Rodger Lamb | 10/10 | 4229 days | 0% |
| Leah Kyllo | 10/10 | 4288 days | 0% |
| Juliet Battersby | 10/10 | 4288 days | 0% |
| Chris C | 10/10 | 4349 days | 0% |
| Jessica | 10/10 | 4441 days | 1% |
| Mike Hollows | 10/10 | 4533 days | 1% |
| Monique Hollows | 10/10 | 4594 days | 1% |
| Thomas Subritzky | 10/10 | 4595 days | 1% |
| hmsteele | 10/10 | 4623 days | 1% |
| andy godfrey | 9/10 | 4654 days | 1% |
| Chris Nisbet | 8/10 | 4654 days | 1% |
| Michelle Sanders | 9/10 | 4685 days | 1% |
| phil costello | 8/10 | 4715 days | 1% |
| Robyn Orchard | 10/10 | 4746 days | 1% |
| Gisele Phillips | 9/10 | 4746 days | 1% |
| E Wall | 10/10 | 4746 days | 1% |
| Julie | 10/10 | 4776 days | 1% |
| Little | 10/10 | 4776 days | 1% |
| Grahame Keast | 10/10 | 4807 days | 1% |
| Linda Bates | 10/10 | 4807 days | 1% |
| Morgan Buckingham | 10/10 | 4807 days | 1% |
| Bertiethebus | 10/10 | 4929 days | 1% |
| Julian Roots | 10/10 | 4960 days | 1% |
| Lynette Nicolson | 10/10 | 5019 days | 1% |
| RENs Rens | 10/10 | 5019 days | 1% |
| CKDNH | 10/10 | 5080 days | 1% |
| mattus | 9/10 | 5080 days | 1% |
| Ken | 10/10 | 5080 days | 1% |
| Kathy27 | 10/10 | 5080 days | 1% |
| ladywithplants | 9/10 | 5141 days | 1% |
| princessliz | 10/10 | 5141 days | 1% |
| lariley | 9/10 | 5141 days | 1% |
| richardp | 10/10 | 5172 days | 1% |
| prasanth03 | 10/10 | 5203 days | 1% |
| EllieW | 10/10 | 5233 days | 1% |
| Terry | 10/10 | 5294 days | 1% |
| Borderland | 10/10 | 5325 days | 1% |
| jimbob | 10/10 | 5325 days | 1% |
| mopheim | 10/10 | 5325 days | 1% |
| Mats Harstedt | 9/10 | 5334 days | 1% |
| KateS | 10/10 | 5354 days | 1% |
| RubberDuck | 10/10 | 5385 days | 1% |
| Red_Hurring | 10/10 | 5385 days | 1% |
| travelpam | 10/10 | 5385 days | 1% |
| barjjake | 9/10 | 5385 days | 1% |
| cindyd | 10/10 | 5416 days | 1% |
| webstersuk | 10/10 | 5416 days | 1% |
| pezalone | 10/10 | 5416 days | 1% |
| WiseOwl | 10/10 | 5416 days | 1% |
| mausandhari | 10/10 | 5416 days | 1% |
| Pauline | 10/10 | 5446 days | 1% |
| JadesWorld | 9/10 | 5446 days | 1% |
| utstarfish | 10/10 | 5446 days | 1% |
| johnco78 | 10/10 | 5446 days | 1% |
| jrwholey | 10/10 | 5477 days | 1% |
| ShawnM | 10/10 | 5477 days | 1% |
| Tarsh | 10/10 | 5477 days | 1% |
| lindahealey | 10/10 | 5477 days | 1% |
| campbell_steven | 10/10 | 5507 days | 1% |
| markrussell | 10/10 | 5507 days | 1% |
| Bayneer | 10/10 | 5507 days | 1% |
| jaspreetsohal86 | 10/10 | 5507 days | 1% |
| kiwiholly | 10/10 | 5507 days | 1% |
| garethd1980 | 10/10 | 5507 days | 1% |
| Mulliano | 10/10 | 5507 days | 1% |
| CathyK | 10/10 | 5538 days | 1% |
| silver | 10/10 | 5538 days | 1% |
| Meyerclan | 10/10 | 5569 days | 1% |
| poetania | 10/10 | 5599 days | 1% |
| southernboy611 | 10/10 | 5599 days | 1% |
| EvilChris | 10/10 | 5630 days | 1% |
| nia427 | 10/10 | 5660 days | 1% |
| Mags620 | 10/10 | 5660 days | 1% |
| deanblackburn | 10/10 | 5660 days | 1% |
| Heatherorchard | 10/10 | 5691 days | 1% |
| BeetleBom | 10/10 | 5691 days | 1% |
| AnnaBain | 10/10 | 5719 days | 1% |
| geezer | 10/10 | 5719 days | 1% |
| Jen | 10/10 | 5719 days | 1% |
| busheybrew | 10/10 | 5719 days | 1% |
| painter47 | 10/10 | 5750 days | 1% |
| ganbji | 9/10 | 5750 days | 1% |
| charles | 10/10 | 5781 days | 1% |
| alanos | 9/10 | 5781 days | 1% |
| teeneelz | 10/10 | 5781 days | 1% |
| Douggie | 7/10 | 5872 days | 1% |
| celticcolleen | 10/10 | 5995 days | 1% |
| MarcyMark | 10/10 | 6025 days | 1% |
| Susiekj | 10/10 | 6056 days | 1% |
| Kirsten | 10/10 | 6084 days | 1% |
| Ravi Chand | 10/10 | 6115 days | 1% |
| Sika | 10/10 | 6115 days | 1% |
| anthony mcclaren | 9/10 | 6115 days | 1% |
| menzel | 10/10 | 6129 days | 1% |
| joannaw | 10/10 | 6131 days | 1% |
| meisterbaumann | 10/10 | 6146 days | 1% |
| Stefanie Micheler | 10/10 | 6157 days | 1% |
| Aussies | 10/10 | 6176 days | 1% |
| Jake Volle | 10/10 | 6176 days | 1% |
| Jess Woods | 10/10 | 6237 days | 1% |
| emmah | 9/10 | 6273 days | 1% |
| Dave Roebuck | 10/10 | 6299 days | 1% |
| steph_m | 9/10 | 6399 days | 1% |
| JasonL | 8/10 | 6402 days | 1% |
| Tanja Kirschmann | 10/10 | 6404 days | 1% |
| MicheyJ | 10/10 | 6405 days | 1% |
| caz | 10/10 | 6426 days | 1% |
| Cilla | 10/10 | 6431 days | 1% |
| Hannah | 10/10 | 6434 days | 1% |
| karlijn schaap | 10/10 | 6510 days | 1% |
| Murray | 10/10 | 6541 days | 1% |
| Jan Burch | 9/10 | 6653 days | 1% |
| zane mirfin | 10/10 | 6709 days | 1% |
| becky | 10/10 | 6737 days | 1% |
| dave | 9/10 | 6765 days | 1% |
| shinylight | 9/10 | 6797 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
-3.23% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 68 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 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.18% |
| 198 | -3.20% |
| 199 | -3.21% |
| 200 | -3.23% |
| 201 | -3.25% |
| 202 | -3.26% |
| 203 | -3.28% |
| … | … |
Balancing Adjustment
0.30% 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
97%
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.