3.Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data?a.The time (in years) it takes a sample of students to graduate college.The mean represents the most appropriate measure for the time it takes students to graduate college. b.The blood type (such as A, B, AB, or O) of a group of participants.Mode represents the most appropriate measure for describing the blood types of participants. c.The rankings of college undergraduate academic programs.The rank scale of measurement is most appropriate to describe the data of college

undergraduate academic programs.

4.How do the sample mean and the population mean differ? What is the symbol for each type of mean?

x5.An expert reviews a sample of 10 scientific articles (n= 10) and records the following numbers of error in each article: 0, 4, 2, 8, 2, 3, 1, 0, 5, and 7. Compute the SS, the variance, and the standard deviation for this sample using the definitional and computational formulas. You may use Microsoft®Excel®data analysis to compute these statistics. You may copy your output from Microsoft®Excel®into this worksheet.

6.A psychologist interested in political behavior measured the square footage of the desks in the official office of four U.S. governors and of four CEOs of major U.S. corporations. The figures for the governors were 44, 36, 52, and 40 square feet. The figures for the CEOs were 32, 60, 48, 36 square feet. a.Figure the means and standard deviations for each group: governors and CEOs.