Answer Happy

1. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. (Points: 5 each) 1) If x1, x2, X3, ..., X. are the n observations of a variable from a sample, then the sample mean is symbolized by Α) μ B) C)Σ D) E) * 2) describes the average or typical data value. A) A measure of dispersion B) A measure of central tendency C) The class width D) A Greek letter E) A Roman letter 3) The heights of ten female students (in inches) in a college math class are listed below. Find the mean. 65 66 67 66 67 70 67 70 71 68 A) 65.5 inches B) 70.0 inches C) 71.1 inches D) 67.7 inches 4) The commuting times (in minutes) of an employee for ten consecutive days are listed below. Find the median commute. 71 67 67 72 76 72 73 68 72 72 A) 73 minutes B) 72 minutes C) 67 minutes D) 71 minutes 5) The February utility bills (in dollars) for ten residents of a large city are listed below. Find the mode amount. $91 $87 $87 $92 $96 992 $93 $88 $92 $92