To assign numerical value to each questionnaire, a researcher decides to use a four-digit code. There are probably how many questionnaires in the data set?

To assign numerical value to each questionnaire, a researcher decides to use a four-digit code. There are probably how many questionnaires in the data set?

To assign numerical value to each questionnaire, a researcher decides to use a four-digit code. There are probably how many questionnaires in the data set? 








A. 323

B. 99

C. 999

D. 576

E. 1249










Answer: E