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 | 159 days | 100% |
| Lynda B | 10/10 | 221 days | 99% |
| V Buys | 10/10 | 465 days | 89% |
| Cody | 10/10 | 496 days | 87% |
| Madonna Thomson | 10/10 | 586 days | 82% |
| Amanda Thomson | 10/10 | 861 days | 59% |
| Peter Little | 10/10 | 890 days | 56% |
| Michaela Liff | 10/10 | 1135 days | 33% |
| Kusum | 10/10 | 1592 days | 8% |
| Betty Dunn | 10/10 | 1620 days | 7% |
| Ruth | 10/10 | 2200 days | 4% |
| Gary Koh | 10/10 | 2413 days | 4% |
| Jan | 10/10 | 2443 days | 4% |
| Alison B. | 10/10 | 2443 days | 4% |
| John Olsen | 10/10 | 2474 days | 4% |
| Peter | 10/10 | 2566 days | 4% |
| Ben | 10/10 | 2596 days | 4% |
| Ian | 10/10 | 2657 days | 3% |
| Gary Walker | 10/10 | 2657 days | 3% |
| Rowella Bacwaden | 10/10 | 2688 days | 3% |
| Eileen H | 10/10 | 2747 days | 3% |
| Brad | 10/10 | 2808 days | 3% |
| Jared London | 10/10 | 2839 days | 3% |
| Helen Turner | 10/10 | 2869 days | 3% |
| James | 10/10 | 2900 days | 3% |
| Isabelle_Qc | 10/10 | 2931 days | 3% |
| Laura | 10/10 | 2961 days | 3% |
| ACE Richardson | 10/10 | 2992 days | 3% |
| Thea :-) | 10/10 | 3053 days | 3% |
| William Webb | 10/10 | 3081 days | 3% |
| Katelyn Mills | 10/10 | 3081 days | 3% |
| Mrs Smith | 10/10 | 3081 days | 3% |
| Mel | 10/10 | 3081 days | 3% |
| Wayne Smith | 10/10 | 3081 days | 3% |
| Kim | 10/10 | 3112 days | 2% |
| Songyang Liu | 10/10 | 3112 days | 2% |
| Mark Haydon | 10/10 | 3446 days | 2% |
| Kathryn Sherlock | 10/10 | 3661 days | 1% |
| Cherie Kemp | 10/10 | 3661 days | 1% |
| Renee Kemp | 10/10 | 3661 days | 1% |
| Patrick McIvor | 10/10 | 3783 days | 1% |
| Lengxi | 10/10 | 3809 days | 1% |
| Uschi Pongratz | 10/10 | 3817 days | 1% |
| Jessica Ruhland | 10/10 | 3817 days | 1% |
| Paul | 7/10 | 3822 days | 1% |
| Philip Piel | 8/10 | 3822 days | 1% |
| Chiara | 8/10 | 3822 days | 1% |
| Jess | 10/10 | 3859 days | 1% |
| TashJ | 10/10 | 3874 days | 1% |
| Funny Schutt | 10/10 | 3874 days | 1% |
| Craig McCarthy | 10/10 | 3904 days | 1% |
| Tim K | 10/10 | 3904 days | 1% |
| Jack Shearer | 10/10 | 4027 days | 1% |
| Monika M | 10/10 | 4057 days | 1% |
| Ian Wilmot | 10/10 | 4118 days | 0% |
| Rodger Lamb | 10/10 | 4149 days | 0% |
| Leah Kyllo | 10/10 | 4208 days | 0% |
| Juliet Battersby | 10/10 | 4208 days | 0% |
| Chris C | 10/10 | 4269 days | 0% |
| Jessica | 10/10 | 4361 days | 0% |
| Mike Hollows | 10/10 | 4453 days | 1% |
| Monique Hollows | 10/10 | 4514 days | 1% |
| Thomas Subritzky | 10/10 | 4514 days | 1% |
| hmsteele | 10/10 | 4542 days | 1% |
| andy godfrey | 9/10 | 4573 days | 1% |
| Chris Nisbet | 8/10 | 4573 days | 1% |
| Michelle Sanders | 9/10 | 4604 days | 1% |
| phil costello | 8/10 | 4634 days | 1% |
| Robyn Orchard | 10/10 | 4665 days | 1% |
| Gisele Phillips | 9/10 | 4665 days | 1% |
| E Wall | 10/10 | 4665 days | 1% |
| Julie | 10/10 | 4695 days | 1% |
| Little | 10/10 | 4695 days | 1% |
| Grahame Keast | 10/10 | 4726 days | 1% |
| Linda Bates | 10/10 | 4726 days | 1% |
| Morgan Buckingham | 10/10 | 4726 days | 1% |
| Bertiethebus | 10/10 | 4848 days | 1% |
| Julian Roots | 10/10 | 4879 days | 1% |
| Lynette Nicolson | 10/10 | 4938 days | 1% |
| RENs Rens | 10/10 | 4938 days | 1% |
| CKDNH | 10/10 | 4999 days | 1% |
| mattus | 9/10 | 4999 days | 1% |
| Ken | 10/10 | 4999 days | 1% |
| Kathy27 | 10/10 | 4999 days | 1% |
| ladywithplants | 9/10 | 5060 days | 1% |
| princessliz | 10/10 | 5060 days | 1% |
| lariley | 9/10 | 5060 days | 1% |
| richardp | 10/10 | 5091 days | 1% |
| prasanth03 | 10/10 | 5122 days | 1% |
| EllieW | 10/10 | 5152 days | 1% |
| Terry | 10/10 | 5213 days | 1% |
| Borderland | 10/10 | 5244 days | 1% |
| jimbob | 10/10 | 5244 days | 1% |
| mopheim | 10/10 | 5244 days | 1% |
| Mats Harstedt | 9/10 | 5253 days | 1% |
| KateS | 10/10 | 5273 days | 1% |
| RubberDuck | 10/10 | 5304 days | 1% |
| Red_Hurring | 10/10 | 5304 days | 1% |
| travelpam | 10/10 | 5304 days | 1% |
| barjjake | 9/10 | 5304 days | 1% |
| cindyd | 10/10 | 5335 days | 1% |
| webstersuk | 10/10 | 5335 days | 1% |
| pezalone | 10/10 | 5335 days | 1% |
| WiseOwl | 10/10 | 5335 days | 1% |
| mausandhari | 10/10 | 5335 days | 1% |
| Pauline | 10/10 | 5365 days | 1% |
| JadesWorld | 9/10 | 5365 days | 1% |
| utstarfish | 10/10 | 5365 days | 1% |
| johnco78 | 10/10 | 5365 days | 1% |
| jrwholey | 10/10 | 5396 days | 1% |
| ShawnM | 10/10 | 5396 days | 1% |
| Tarsh | 10/10 | 5396 days | 1% |
| lindahealey | 10/10 | 5396 days | 1% |
| campbell_steven | 10/10 | 5426 days | 1% |
| markrussell | 10/10 | 5426 days | 1% |
| Bayneer | 10/10 | 5426 days | 1% |
| jaspreetsohal86 | 10/10 | 5426 days | 1% |
| kiwiholly | 10/10 | 5426 days | 1% |
| garethd1980 | 10/10 | 5426 days | 1% |
| Mulliano | 10/10 | 5426 days | 1% |
| CathyK | 10/10 | 5457 days | 1% |
| silver | 10/10 | 5457 days | 1% |
| Meyerclan | 10/10 | 5488 days | 1% |
| poetania | 10/10 | 5518 days | 1% |
| southernboy611 | 10/10 | 5518 days | 1% |
| EvilChris | 10/10 | 5549 days | 1% |
| nia427 | 10/10 | 5579 days | 1% |
| Mags620 | 10/10 | 5579 days | 1% |
| deanblackburn | 10/10 | 5579 days | 1% |
| Heatherorchard | 10/10 | 5610 days | 1% |
| BeetleBom | 10/10 | 5610 days | 1% |
| AnnaBain | 10/10 | 5638 days | 1% |
| geezer | 10/10 | 5638 days | 1% |
| Jen | 10/10 | 5638 days | 1% |
| busheybrew | 10/10 | 5638 days | 1% |
| painter47 | 10/10 | 5669 days | 1% |
| ganbji | 9/10 | 5669 days | 1% |
| charles | 10/10 | 5700 days | 1% |
| alanos | 9/10 | 5700 days | 1% |
| teeneelz | 10/10 | 5700 days | 1% |
| Douggie | 7/10 | 5791 days | 1% |
| celticcolleen | 10/10 | 5914 days | 1% |
| MarcyMark | 10/10 | 5944 days | 1% |
| Susiekj | 10/10 | 5975 days | 1% |
| Kirsten | 10/10 | 6003 days | 1% |
| Ravi Chand | 10/10 | 6034 days | 1% |
| Sika | 10/10 | 6034 days | 1% |
| anthony mcclaren | 9/10 | 6034 days | 1% |
| menzel | 10/10 | 6048 days | 1% |
| joannaw | 10/10 | 6050 days | 1% |
| meisterbaumann | 10/10 | 6065 days | 1% |
| Stefanie Micheler | 10/10 | 6076 days | 1% |
| Aussies | 10/10 | 6095 days | 1% |
| Jake Volle | 10/10 | 6095 days | 1% |
| Jess Woods | 10/10 | 6156 days | 1% |
| emmah | 9/10 | 6192 days | 1% |
| Dave Roebuck | 10/10 | 6218 days | 1% |
| steph_m | 9/10 | 6319 days | 1% |
| JasonL | 8/10 | 6321 days | 1% |
| Tanja Kirschmann | 10/10 | 6323 days | 1% |
| MicheyJ | 10/10 | 6325 days | 1% |
| caz | 10/10 | 6345 days | 1% |
| Cilla | 10/10 | 6351 days | 1% |
| Hannah | 10/10 | 6353 days | 1% |
| karlijn schaap | 10/10 | 6430 days | 1% |
| Murray | 10/10 | 6460 days | 1% |
| Jan Burch | 9/10 | 6572 days | 1% |
| zane mirfin | 10/10 | 6629 days | 1% |
| becky | 10/10 | 6656 days | 1% |
| dave | 9/10 | 6684 days | 1% |
| shinylight | 9/10 | 6716 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
-1.36% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 125 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 136 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 133 | -1.33% |
| 134 | -1.34% |
| 135 | -1.35% |
| 136 | -1.36% |
| 137 | -1.37% |
| 138 | -1.38% |
| 139 | -1.39% |
| … | … |
Balancing Adjustment
0.14% 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
98%
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.