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Amazon.com > Home & Kitchen > Kitchen & Dining > Dining & Entertaining > Glassware & Drinkware > Tumblers & Water Glasses
60th Birthday Gifts for Men - 1962 Vintage 16 oz Black Coffee Tumbler - 60th Birthday Decorations...
More product info
From Sodilly
This report was last updated 12/15/2022.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Note: We only analyze "reviews" and ignore one-tap "ratings".
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Top products in Tumblers & Water Glasses with authentic reviews:
Report Card
Pass Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL Word Count Comparison
Word Count ComparisonPASS Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
Gave as part of a 60th birthday present Cup is ... [Go to full review]
Jan 11, 2022
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0) -
Easy Grader (avg. rating: 4.5)
Critical Reviewer (avg. rating: 2.3)
Overlapping Review History: reviewed 1 of 9 top products
Unverified Purchaser
Least Trusted Reviews
I purchased this mug for a birthday gift. It arrived ... [Go to full review]
Oct 21, 2021
24%
TRUST
TRUST
-
Verified Purchaser
-
Contains repetitive phrases (show)
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Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
-
Overrepresented Participation (posted 9 Reviews) -
Easy Grader (avg. rating: 5.0)
Overrepresented word count (8 words)
Single-Day Reviewer (posted all reviews on Jun 14, 2022)
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
Single-Day Reviewers
Less than approximately 10% of reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.0 while all other reviewers rated this product an average of 5.0. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Fail Word Count Comparison
Word Count Comparison
-
- >90%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that over approximately 90% are within an overrepresented word count group. These reviews have rated this product an average of 5.0, while all other reviews have rated this product an average of 4.8. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Pass Rating Trend
Rating Trend
-
- <10%
- Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
Unverified Purchases
4 of the 600 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
~10% of reviews
(5.0/5)
(5.0/5)
Common Phrases in Titles:
~10% of reviews
(5.0/5)
(5.0/5)
Less than approximately 10% of reviews use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Overlapping Review History
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- <10%
- Substantial overlapping review history
Less than approximately 10% of reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Overlapping Review History test.
Read more about our Overlapping Review History test.
Pass Reviewer Ease
Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.6, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.6 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- <10%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.