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 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
99.63%
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 | 279 days | 100% |
| Lynda B | 10/10 | 341 days | 98% |
| V Buys | 10/10 | 585 days | 84% |
| Cody | 10/10 | 616 days | 82% |
| Madonna Thomson | 10/10 | 706 days | 75% |
| Amanda Thomson | 10/10 | 981 days | 48% |
| Peter Little | 10/10 | 1010 days | 45% |
| Michaela Liff | 10/10 | 1255 days | 25% |
| Kusum | 10/10 | 1712 days | 6% |
| Betty Dunn | 10/10 | 1740 days | 6% |
| Ruth | 10/10 | 2320 days | 4% |
| Gary Koh | 10/10 | 2533 days | 4% |
| Jan | 10/10 | 2563 days | 4% |
| Alison B. | 10/10 | 2563 days | 4% |
| John Olsen | 10/10 | 2594 days | 4% |
| Peter | 10/10 | 2686 days | 3% |
| Ben | 10/10 | 2716 days | 3% |
| Ian | 10/10 | 2777 days | 3% |
| Gary Walker | 10/10 | 2777 days | 3% |
| Rowella Bacwaden | 10/10 | 2808 days | 3% |
| Eileen H | 10/10 | 2867 days | 3% |
| Brad | 10/10 | 2928 days | 3% |
| Jared London | 10/10 | 2959 days | 3% |
| Helen Turner | 10/10 | 2989 days | 3% |
| James | 10/10 | 3020 days | 3% |
| Isabelle_Qc | 10/10 | 3051 days | 3% |
| Laura | 10/10 | 3081 days | 3% |
| ACE Richardson | 10/10 | 3112 days | 2% |
| Thea :-) | 10/10 | 3173 days | 2% |
| William Webb | 10/10 | 3201 days | 2% |
| Katelyn Mills | 10/10 | 3201 days | 2% |
| Mrs Smith | 10/10 | 3201 days | 2% |
| Mel | 10/10 | 3201 days | 2% |
| Wayne Smith | 10/10 | 3201 days | 2% |
| Kim | 10/10 | 3232 days | 2% |
| Songyang Liu | 10/10 | 3232 days | 2% |
| Mark Haydon | 10/10 | 3566 days | 2% |
| Kathryn Sherlock | 10/10 | 3781 days | 1% |
| Cherie Kemp | 10/10 | 3781 days | 1% |
| Renee Kemp | 10/10 | 3781 days | 1% |
| Patrick McIvor | 10/10 | 3903 days | 1% |
| Lengxi | 10/10 | 3929 days | 0% |
| Uschi Pongratz | 10/10 | 3937 days | 0% |
| Jessica Ruhland | 10/10 | 3937 days | 0% |
| Paul | 7/10 | 3942 days | 0% |
| Philip Piel | 8/10 | 3942 days | 0% |
| Chiara | 8/10 | 3942 days | 0% |
| Jess | 10/10 | 3979 days | 0% |
| TashJ | 10/10 | 3994 days | 1% |
| Funny Schutt | 10/10 | 3994 days | 1% |
| Craig McCarthy | 10/10 | 4024 days | 1% |
| Tim K | 10/10 | 4024 days | 1% |
| Jack Shearer | 10/10 | 4147 days | 0% |
| Monika M | 10/10 | 4177 days | 0% |
| Ian Wilmot | 10/10 | 4238 days | 0% |
| Rodger Lamb | 10/10 | 4269 days | 0% |
| Leah Kyllo | 10/10 | 4328 days | 0% |
| Juliet Battersby | 10/10 | 4328 days | 0% |
| Chris C | 10/10 | 4389 days | 1% |
| Jessica | 10/10 | 4481 days | 1% |
| Mike Hollows | 10/10 | 4573 days | 1% |
| Monique Hollows | 10/10 | 4634 days | 1% |
| Thomas Subritzky | 10/10 | 4634 days | 1% |
| hmsteele | 10/10 | 4662 days | 1% |
| andy godfrey | 9/10 | 4693 days | 1% |
| Chris Nisbet | 8/10 | 4693 days | 1% |
| Michelle Sanders | 9/10 | 4724 days | 1% |
| phil costello | 8/10 | 4754 days | 1% |
| Robyn Orchard | 10/10 | 4785 days | 1% |
| Gisele Phillips | 9/10 | 4785 days | 1% |
| E Wall | 10/10 | 4785 days | 1% |
| Julie | 10/10 | 4815 days | 1% |
| Little | 10/10 | 4815 days | 1% |
| Grahame Keast | 10/10 | 4846 days | 1% |
| Linda Bates | 10/10 | 4846 days | 1% |
| Morgan Buckingham | 10/10 | 4846 days | 1% |
| Bertiethebus | 10/10 | 4968 days | 1% |
| Julian Roots | 10/10 | 4999 days | 1% |
| Lynette Nicolson | 10/10 | 5058 days | 1% |
| RENs Rens | 10/10 | 5058 days | 1% |
| CKDNH | 10/10 | 5119 days | 1% |
| mattus | 9/10 | 5119 days | 1% |
| Ken | 10/10 | 5119 days | 1% |
| Kathy27 | 10/10 | 5119 days | 1% |
| ladywithplants | 9/10 | 5180 days | 1% |
| princessliz | 10/10 | 5180 days | 1% |
| lariley | 9/10 | 5180 days | 1% |
| richardp | 10/10 | 5211 days | 1% |
| prasanth03 | 10/10 | 5242 days | 1% |
| EllieW | 10/10 | 5272 days | 1% |
| Terry | 10/10 | 5333 days | 1% |
| Borderland | 10/10 | 5364 days | 1% |
| jimbob | 10/10 | 5364 days | 1% |
| mopheim | 10/10 | 5364 days | 1% |
| Mats Harstedt | 9/10 | 5373 days | 1% |
| KateS | 10/10 | 5393 days | 1% |
| RubberDuck | 10/10 | 5424 days | 1% |
| Red_Hurring | 10/10 | 5424 days | 1% |
| travelpam | 10/10 | 5424 days | 1% |
| barjjake | 9/10 | 5424 days | 1% |
| cindyd | 10/10 | 5455 days | 1% |
| webstersuk | 10/10 | 5455 days | 1% |
| pezalone | 10/10 | 5455 days | 1% |
| WiseOwl | 10/10 | 5455 days | 1% |
| mausandhari | 10/10 | 5455 days | 1% |
| Pauline | 10/10 | 5485 days | 1% |
| JadesWorld | 9/10 | 5485 days | 1% |
| utstarfish | 10/10 | 5485 days | 1% |
| johnco78 | 10/10 | 5485 days | 1% |
| jrwholey | 10/10 | 5516 days | 1% |
| ShawnM | 10/10 | 5516 days | 1% |
| Tarsh | 10/10 | 5516 days | 1% |
| lindahealey | 10/10 | 5516 days | 1% |
| campbell_steven | 10/10 | 5546 days | 1% |
| markrussell | 10/10 | 5546 days | 1% |
| Bayneer | 10/10 | 5546 days | 1% |
| jaspreetsohal86 | 10/10 | 5546 days | 1% |
| kiwiholly | 10/10 | 5546 days | 1% |
| garethd1980 | 10/10 | 5546 days | 1% |
| Mulliano | 10/10 | 5546 days | 1% |
| CathyK | 10/10 | 5577 days | 1% |
| silver | 10/10 | 5577 days | 1% |
| Meyerclan | 10/10 | 5608 days | 1% |
| poetania | 10/10 | 5638 days | 1% |
| southernboy611 | 10/10 | 5638 days | 1% |
| EvilChris | 10/10 | 5669 days | 1% |
| nia427 | 10/10 | 5699 days | 1% |
| Mags620 | 10/10 | 5699 days | 1% |
| deanblackburn | 10/10 | 5699 days | 1% |
| Heatherorchard | 10/10 | 5730 days | 1% |
| BeetleBom | 10/10 | 5730 days | 1% |
| AnnaBain | 10/10 | 5758 days | 1% |
| geezer | 10/10 | 5758 days | 1% |
| Jen | 10/10 | 5758 days | 1% |
| busheybrew | 10/10 | 5758 days | 1% |
| painter47 | 10/10 | 5789 days | 1% |
| ganbji | 9/10 | 5789 days | 1% |
| charles | 10/10 | 5820 days | 1% |
| alanos | 9/10 | 5820 days | 1% |
| teeneelz | 10/10 | 5820 days | 1% |
| Douggie | 7/10 | 5911 days | 1% |
| celticcolleen | 10/10 | 6034 days | 1% |
| MarcyMark | 10/10 | 6064 days | 1% |
| Susiekj | 10/10 | 6095 days | 1% |
| Kirsten | 10/10 | 6123 days | 1% |
| Ravi Chand | 10/10 | 6154 days | 1% |
| Sika | 10/10 | 6154 days | 1% |
| anthony mcclaren | 9/10 | 6154 days | 1% |
| menzel | 10/10 | 6168 days | 1% |
| joannaw | 10/10 | 6170 days | 1% |
| meisterbaumann | 10/10 | 6185 days | 1% |
| Stefanie Micheler | 10/10 | 6196 days | 1% |
| Aussies | 10/10 | 6215 days | 1% |
| Jake Volle | 10/10 | 6215 days | 1% |
| Jess Woods | 10/10 | 6276 days | 1% |
| emmah | 9/10 | 6312 days | 1% |
| Dave Roebuck | 10/10 | 6338 days | 1% |
| steph_m | 9/10 | 6439 days | 1% |
| JasonL | 8/10 | 6441 days | 1% |
| Tanja Kirschmann | 10/10 | 6443 days | 1% |
| MicheyJ | 10/10 | 6445 days | 1% |
| caz | 10/10 | 6465 days | 1% |
| Cilla | 10/10 | 6471 days | 1% |
| Hannah | 10/10 | 6473 days | 1% |
| karlijn schaap | 10/10 | 6550 days | 1% |
| Murray | 10/10 | 6580 days | 1% |
| Jan Burch | 9/10 | 6692 days | 1% |
| zane mirfin | 10/10 | 6749 days | 1% |
| becky | 10/10 | 6776 days | 1% |
| dave | 9/10 | 6804 days | 1% |
| shinylight | 9/10 | 6836 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
-3.93% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 47 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 | -3.87% |
| 198 | -3.89% |
| 199 | -3.91% |
| 200 | -3.93% |
| 201 | -3.95% |
| 202 | -3.97% |
| 203 | -3.99% |
| … | … |
Balancing Adjustment
0.37% 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
96%
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.