Ranking Score Explained

Hi there, 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 Christchurch Botanic Gardens.

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.

Nick Morrison's avatar

Nick Morrison

Rankers owner

Christchurch Botanic Gardens

Valid Reviews

73 Valid Reviews

The Christchurch Botanic Gardens experience has a total of 73 valid reviews. There are no 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 73 valid reviews:

Rating Count Percentage
10/10 22
30%
9/10 21
29%
8/10 25
34%
7/10 4
5%
6/10 0
0%
5/10 0
0%
4/10 1
1%
3/10 0
0%
2/10 0
0%
1/10 0
0%

87.81% Average

The raw data average (mean) for all the Christchurch Botanic Gardens valid reviews is 87.81% and is based on 73 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

66 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 73 valid reviews, the experience has 66 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 66 face-to-face reviews:

Rating Count Percentage
10/10 19
29%
9/10 18
27%
8/10 25
38%
7/10 3
5%
6/10 0
0%
5/10 0
0%
4/10 1
2%
3/10 0
0%
2/10 0
0%
1/10 0
0%

87.42% Average

The raw data average (mean) for all the Christchurch Botanic Gardens face-to-face reviews is 87.42% and is based on 66 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

86.67%

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 Face-to-Face Weight Relative Weight
Sophie R 10/10 883 days 12.12 100%
Wilhelm Wiechel 10/10 967 days true 7.6 63%
Nienke Best 9/10 1177 days 4.84 40%
Bernd Giermann 8/10 1278 days true 4.41 36%
Zak Jan 9/10 1317 days true 4.57 38%
Romana Novotna 8/10 1317 days true 4.34 36%
Tereza Nemeckova 10/10 1326 days true 4.55 38%
Petr Sykora 8/10 1326 days true 4.32 36%
Anna 8/10 1330 days true 4.31 36%
Sherrie Fox 9/10 1332 days 4.54 37%
Felix 9/10 1332 days true 4.54 37%
Lina Kiellamn 8/10 1333 days true 4.31 36%
Marek 9/10 1364 days true 4.47 37%
Kristin Pogue 8/10 1565 days true 3.88 32%
Madelaine Sirch 9/10 1574 days true 4.06 34%
Jonathan Maus 8/10 1578 days true 3.85 32%
Lærke Hagelskjær 8/10 1585 days true 3.84 32%
Alexandra Zwiers 8/10 1589 days true 3.83 32%
Greta 8/10 1621 days true 3.77 31%
Anna Guttle 8/10 1635 days true 3.75 31%
Anais Touri 8/10 1641 days true 3.73 31%
Kathanina Jasik 7/10 1647 days true 3.57 29%
Ahmed Mohsen Aly 7/10 1713 days 3.45 28%
Caro G 9/10 1719 days 3.78 31%
Shona MacDonald 8/10 2290 days true 2.53 21%
Sandra Frischmann 9/10 2321 days true 2.6 21%
Carolin Kettler 9/10 2338 days true 2.57 21%
Mirjam Betschart 4/10 2338 days true 2.03 17%
Manuela Michelbach 8/10 2341 days true 2.43 20%
Colin Evins 8/10 2342 days true 2.43 20%
Janet Evins 8/10 2342 days true 2.43 20%
F Ballard 10/10 2350 days true 2.54 21%
Claire Lieval 9/10 2371 days true 2.5 21%
Alan Blackburn 10/10 2414 days 2.42 20%
Christin Woelk 9/10 2653 days true 1.95 16%
Dupont 7/10 2695 days true 1.7 14%
Mathieu Brias 9/10 2735 days true 1.79 15%
Ingrid 9/10 2761 days true 1.74 14%
Sue Kieseker 9/10 2764 days true 1.73 14%
Mark and Eefie 8/10 2764 days true 1.65 14%
M Booty 8/10 2766 days true 1.64 14%
Anne and John 9/10 2778 days true 1.71 14%
Jill Boruff 10/10 3048 days true 1.18 10%
Ron White 10/10 3060 days true 1.15 10%
Jaap & Susanne 9/10 3063 days true 1.15 9%
Lyn Deavin 7/10 3066 days true 1.04 9%
Erik Poirer 10/10 3068 days true 1.14 9%
Jon Winter 10/10 3069 days true 1.14 9%
David & Sue Lokkerbol 10/10 3069 days true 1.14 9%
Des & Ann Bidwell 10/10 3078 days true 1.12 9%
Sally Rawson 8/10 3094 days true 1.03 9%
David & Audrey 10/10 3160 days true 0.96 8%
Steve Pearce 8/10 3424 days true 0.42 3%
Derek Puplett 10/10 3424 days true 0.44 4%
Belony 10/10 3435 days true 0.42 3%
Andy 8/10 3435 days true 0.4 3%
Forestal Youri 10/10 3440 days true 0.41 3%
Gerry Nichols 10/10 3443 days true 0.41 3%
Mary Van 10/10 3601 days 0.1 1%
Conny 9/10 3719 days true 0.0 0%
Jesper Sch 10/10 3767 days true 0.0 0%
OMPA 10/10 3773 days true 0.0 0%
Janny en Bert 8/10 3775 days true 0.0 0%
Peter Brown 10/10 3781 days true 0.0 0%
Bob Kusesia 9/10 3786 days true 0.0 0%
Johan 8/10 3787 days true 0.0 0%
Jeanne Singuefreld 8/10 3795 days true 0.0 0%
John Borneman 9/10 3830 days true 0.0 0%
Dermot Bryne 9/10 3898 days true 0.0 0%
andyge 9/10 3905 days true 0.0 0%
AndyEngland 8/10 4107 days true 0.0 0%
PamB 10/10 4107 days true 0.0 0%
Andy Baker 10/10 4139 days true 0.0 0%

Adjustments

No Adjustment

Several adjustments to the weighted average may be added to improve relevancy and credibility. Christchurch Botanic Gardens does not meet the criteria for any of these adjustments to apply.

Final Ranking Score

87%

The final ranking score once rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.

If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.