1. Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values?

1, 2,2, 3, 4,5,5,5,5,6

What is the standard deviation for the data values?

a. 1.687

b. 2.84

c. 1.6

d. 2.56

2.Which of the following statements is true?

a. When taking a sample from the populations, the variable involved will always be qualitative

b. A population is the object upon which we collect data

c. In a true census no inferential statistics can be done, because the entire population is the sample

d. The definition of a census is the decennial census of the United States of America