Grammar and sentence check please?

Question

She used data such as race, ethnicity, and the mortality rate from 1975-2010. She researched the cancer mortality by counties

Answer 1

Favorite Answer

"She used data such as race, ethnicity, and the mortality rate from 1975-2010. She researched the cancer mortality by counties " should be corrected as: "She used data essentially of race, ethnicity, and mortality each rated from 1975-2010 for the counties' cancer research."

Answer 2

Sure, you're correct. Period at the end of.".....by counties."

Spelling correct!!

Source(s): Native American English speaker for 67 years.