Marvin is looking for data to help him with a new marketing research study assigned to him. When reviewing existing secondary data from a past research study, Marvin should pay careful attention to

Group of answer choices

how often primary data were substituted for secondary data.

how the secondary data were collected.

whether the data were transformed into information.

whether or not the Census Bureau has certified the research.

where the data were warehoused.

Group of answer choices

nonsampling errors

sampling errors

errors committed by non$-$certified marketing researchers

subject errors

field worker errors