From a Cross Validated (better known as Stats.SE) answer with 117 upvotes:
Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.
As @Dikran Marsupial points out, the quote is found in Quotations for Our Time and requoted in Oxford Essential Quotations. @Jmac-recommended: So, here are some things you may want to consider: 1) Is/are the book(s) credible? 2) Is there a direct source rather than these indirect dictionary of quotations?*
Edit: I have seen this highly specific reference to 10 November 1951, Evening Standard (Uniontown, PA). Can anybody verify if the following quote (or similar) appears in the newspaper? (the newspaper itself existed at that time) "STATISTICS: At the Research Institute of America, Leo Cherne began to discuss the interpretation of statistics with his economist, Aaron Levenstein. The economist said: “Mr. Cherne, statistics are like a Bikini bathing suit. What they reveal is suggestive, but what they conceal is vital.”