In lab, one of your classmates is confused because their calculations for bacteria in 1.0 gram of soil for each of their dilution plates is very similar! They comment, "I counted different numbers of...

Extracted text: In lab, one of your classmates is confused because their calculations for bacteria in 1.0 gram of soil for each of their dilution plates is very similar! They comment, "I counted different numbers of colonies - why are they so close?" What will you tell them about their calculations?