Hey, 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
85.70%
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 | 3263 days | 100% |
| Felix Holm | 8/10 | 4013 days | 31% |
| Lagarde | 5/10 | 4274 days | 6% |
| Stefanie | 8/10 | 4275 days | 8% |
| Zuzana Holubova | 10/10 | 4278 days | 7% |
| Terry Seaman | 2/10 | 4335 days | 0% |
| Annie | 9/10 | 5049 days | 44% |
| Sebastian Rossbach | 9/10 | 5049 days | 44% |
| Mickey | 8/10 | 5049 days | 44% |
| Cynthia | 10/10 | 5049 days | 45% |
| Rene | 8/10 | 5049 days | 44% |
| Christina | 10/10 | 5052 days | 45% |
| Fabienne Indergand | 10/10 | 5132 days | 45% |
| Christina | 7/10 | 5145 days | 42% |
| Phill2517 | 8/10 | 5342 days | 44% |
| Jon_and_Family | 10/10 | 5372 days | 45% |
| Leanne Shepherd | 7/10 | 5395 days | 42% |
| Pat_65 | 9/10 | 5403 days | 44% |
| Cheryl | 9/10 | 5421 days | 44% |
| Dennis & Claudia | 9/10 | 5423 days | 44% |
| Barry | 9/10 | 5424 days | 44% |
| Robin Schomburg | 10/10 | 5428 days | 45% |
| Silke Seemann | 10/10 | 5759 days | 45% |
| Brent S | 9/10 | 5762 days | 44% |
| Roger Trusedale | 10/10 | 5778 days | 45% |
| Lynn Tichauer | 10/10 | 5779 days | 45% |
| Tanja Haring | 8/10 | 5781 days | 44% |
| Martÿn Steenvoorden | 9/10 | 5788 days | 44% |
| Stephen | 9/10 | 5792 days | 44% |
| Bram-Jan M | 5/10 | 5795 days | 34% |
| Beute Hjel | 4/10 | 5812 days | 29% |
| stephenst | 8/10 | 5842 days | 44% |
| timgr | 8/10 | 5843 days | 44% |
| Cyriel Schacken | 8/10 | 5868 days | 44% |
| bdevries | 9/10 | 5869 days | 44% |
| eowyn2k | 9/10 | 5888 days | 44% |
| trvlbug | 10/10 | 6011 days | 45% |
| monniere | 6/10 | 6012 days | 38% |
| TrevorK | 9/10 | 6135 days | 44% |
| SarahK | 10/10 | 6135 days | 45% |
| MartinG | 9/10 | 6135 days | 44% |
| PellucoFrance | 9/10 | 6136 days | 44% |
| James | 7/10 | 6151 days | 42% |
| Sharleen Stewart | 10/10 | 6154 days | 45% |
| RubenD | 7/10 | 6161 days | 42% |
| Henk | 9/10 | 6167 days | 44% |
| straw64 | 5/10 | 6192 days | 34% |
| Maud | 6/10 | 6207 days | 38% |
| Spyfox | 10/10 | 6209 days | 45% |
| nsmith | 10/10 | 6254 days | 45% |
| NORTZ | 9/10 | 6264 days | 44% |
| Clare | 9/10 | 6269 days | 44% |
| S D | 9/10 | 6316 days | 44% |
| fgregory | 10/10 | 6365 days | 45% |
| Naoko | 7/10 | 6468 days | 42% |
| Lena1 | 10/10 | 6502 days | 45% |
| Atara | 10/10 | 6513 days | 45% |
| Jenny Hulsebosch | 6/10 | 6530 days | 38% |
| Jo | 9/10 | 6544 days | 44% |
| Seldam | 7/10 | 6550 days | 42% |
| Kevin | 8/10 | 6587 days | 44% |
| John | 5/10 | 6820 days | 34% |
| andrew julie | 7/10 | 6826 days | 42% |
| Cohen | 8/10 | 6828 days | 44% |
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
-4.06% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.00% |
| 198 | -4.02% |
| 199 | -4.04% |
| 200 | -4.06% |
| 201 | -4.08% |
| 202 | -4.10% |
| 203 | -4.12% |
| … | … |
Balancing Adjustment
2.57% 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.