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 National Kiwi Hatchery.
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.
National Kiwi Hatchery
Valid Reviews
64 Valid Reviews
The National Kiwi Hatchery experience has a total of 66 reviews. There are 64 valid reviews that are included when calculating the ranking score and 2 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 64 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 18 |
|
28% |
| 9/10 | 19 |
|
30% |
| 8/10 | 11 |
|
17% |
| 7/10 | 7 |
|
11% |
| 6/10 | 3 |
|
5% |
| 5/10 | 4 |
|
6% |
| 4/10 | 1 |
|
2% |
| 3/10 | 0 |
|
0% |
| 2/10 | 1 |
|
2% |
| 1/10 | 0 |
|
0% |
83.13% Average
The raw data average (mean) for all the National Kiwi Hatchery valid reviews is 83.13% and is based on 64 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
50 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 64 valid reviews, the experience has 50 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 50 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 11 |
|
22% |
| 9/10 | 15 |
|
30% |
| 8/10 | 10 |
|
20% |
| 7/10 | 7 |
|
14% |
| 6/10 | 3 |
|
6% |
| 5/10 | 3 |
|
6% |
| 4/10 | 1 |
|
2% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
82.20% Average
The raw data average (mean) for all the National Kiwi Hatchery face-to-face reviews is 82.20% and is based on 50 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
85.26%
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 |
|---|---|---|---|
| Claudia Hobbs | 10/10 | 3352 days | 100% |
| Felix Holm | 8/10 | 4102 days | 26% |
| Lagarde | 5/10 | 4363 days | 0% |
| Stefanie | 8/10 | 4364 days | 0% |
| Zuzana Holubova | 10/10 | 4367 days | 0% |
| Terry Seaman | 2/10 | 4424 days | 22% |
| Annie | 9/10 | 5138 days | 49% |
| Sebastian Rossbach | 9/10 | 5138 days | 49% |
| Mickey | 8/10 | 5138 days | 48% |
| Cynthia | 10/10 | 5138 days | 49% |
| Rene | 8/10 | 5138 days | 48% |
| Christina | 10/10 | 5141 days | 49% |
| Fabienne Indergand | 10/10 | 5221 days | 49% |
| Christina | 7/10 | 5234 days | 46% |
| Phill2517 | 8/10 | 5431 days | 48% |
| Jon_and_Family | 10/10 | 5461 days | 49% |
| Leanne Shepherd | 7/10 | 5484 days | 46% |
| Pat_65 | 9/10 | 5492 days | 49% |
| Cheryl | 9/10 | 5510 days | 49% |
| Dennis & Claudia | 9/10 | 5512 days | 49% |
| Barry | 9/10 | 5513 days | 49% |
| Robin Schomburg | 10/10 | 5517 days | 49% |
| Silke Seemann | 10/10 | 5848 days | 49% |
| Brent S | 9/10 | 5851 days | 49% |
| Roger Trusedale | 10/10 | 5867 days | 49% |
| Lynn Tichauer | 10/10 | 5868 days | 49% |
| Tanja Haring | 8/10 | 5870 days | 48% |
| Martÿn Steenvoorden | 9/10 | 5877 days | 49% |
| Stephen | 9/10 | 5881 days | 49% |
| Bram-Jan M | 5/10 | 5884 days | 37% |
| Beute Hjel | 4/10 | 5901 days | 32% |
| stephenst | 8/10 | 5931 days | 48% |
| timgr | 8/10 | 5932 days | 48% |
| Cyriel Schacken | 8/10 | 5957 days | 48% |
| bdevries | 9/10 | 5958 days | 49% |
| eowyn2k | 9/10 | 5977 days | 49% |
| trvlbug | 10/10 | 6100 days | 49% |
| monniere | 6/10 | 6101 days | 42% |
| TrevorK | 9/10 | 6224 days | 49% |
| SarahK | 10/10 | 6224 days | 49% |
| MartinG | 9/10 | 6224 days | 49% |
| PellucoFrance | 9/10 | 6225 days | 49% |
| James | 7/10 | 6240 days | 46% |
| Sharleen Stewart | 10/10 | 6243 days | 49% |
| RubenD | 7/10 | 6250 days | 46% |
| Henk | 9/10 | 6256 days | 49% |
| straw64 | 5/10 | 6281 days | 37% |
| Maud | 6/10 | 6296 days | 42% |
| Spyfox | 10/10 | 6298 days | 49% |
| nsmith | 10/10 | 6344 days | 49% |
| NORTZ | 9/10 | 6353 days | 49% |
| Clare | 9/10 | 6358 days | 49% |
| S D | 9/10 | 6405 days | 49% |
| fgregory | 10/10 | 6454 days | 49% |
| Naoko | 7/10 | 6557 days | 46% |
| Lena1 | 10/10 | 6592 days | 49% |
| Atara | 10/10 | 6602 days | 49% |
| Jenny Hulsebosch | 6/10 | 6619 days | 42% |
| Jo | 9/10 | 6633 days | 49% |
| Seldam | 7/10 | 6639 days | 46% |
| Kevin | 8/10 | 6676 days | 48% |
| John | 5/10 | 6909 days | 37% |
| andrew julie | 7/10 | 6915 days | 46% |
| Cohen | 8/10 | 6917 days | 48% |
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 National Kiwi Hatchery experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.00% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 days. However the National Kiwi Hatchery 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 National Kiwi Hatchery experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.94% |
| 198 | -3.96% |
| 199 | -3.98% |
| 200 | -4.00% |
| 201 | -4.02% |
| 202 | -4.04% |
| 203 | -4.06% |
| … | … |
Balancing Adjustment
2.66% 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
84%
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.