Well, 4/13 is closer to 31% than any other integral percentage. (It's about 30.769%.)
There were 225 companies surveyed. Of those, 29% owned Linux servers, which works out to 65 companies. Some unspecified number of companies recently purchased new Linux servers. Presumably any company that recently purchased a new Linux server now owns a Linux server, so no more than (and probably many fewer than) 65 companies recently purchased Linux servers. 31% of 65 is 20.
So, between 4 and 20 companies (out of 225) have recently replaced Windows servers with Linux servers.
No mention is made that I see of how many Linux systems each company owns. Nor is any allowance made for a company buying three Linux systems: one to add capacity, one to replace a Windows system, and one to replace a Unix system. So if there was such a company, they presumably randomly chose their response.
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Well, 4/13 is closer to 31% than any other integral percentage. (It's about 30.769%.)
There were 225 companies surveyed. Of those, 29% owned Linux servers, which works out to 65 companies. Some unspecified number of companies recently purchased new Linux servers. Presumably any company that recently purchased a new Linux server now owns a Linux server, so no more than (and probably many fewer than) 65 companies recently purchased Linux servers. 31% of 65 is 20.
So, between 4 and 20 companies (out of 225) have recently replaced Windows servers with Linux servers.
No mention is made that I see of how many Linux systems each company owns. Nor is any allowance made for a company buying three Linux systems: one to add capacity, one to replace a Windows system, and one to replace a Unix system. So if there was such a company, they presumably randomly chose their response.