Homeowners aged 40 to 50 are more likely to purchase ice cream and are more likely to purchase it in larger amounts than are members of any other demographic group. The popular belief that teenagers eat more ice cream than adults must, therefore, be false.
The argument is flawed primarily because the author
fails to distinguish between purchasing and consuming
does not supply information about homeowners in age groups other than 40 to 50
depends on popular belief rather than on documented research findings
does not specify the precise amount of ice cream purchased by any demographic group
discusses ice cream rather than more nutritious and healthful foods