You send a report to your boss for feedback and she returns it to you with her edits noted in the electronic file. this word feature is called
a. online markup.
b. markup changes.
c. online edits.
d. track changes

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling