Assume a student received the following grades for the semester: History, B; Statistics, A; Spanish, C; and English, C. History and English are 5 credit hour courses, Statistics a 4 credit hour course and Spanish a 3 credit hour course. If 4 grade points are assigned for an A, 3 for a B and 2 for a C, what is the weighted mean for the semester grades?

61.  Assume a student received the following grades for the semester: History, B; Statistics, A; Spanish, C; and English, C.  History and English are 5 credit hour courses, Statistics a 4 credit hour course and Spanish a 3 credit hour course.  If 4 grade points are assigned for an A, 3 for a B and 2 for a C, what is the weighted mean for the semester grades?

A)  4.00

B)  1.96

C)  2.61

D)  3.01

E)  2.88

Answer: C      

62.  Production of passenger cars in Japan increased from 3.94 million in 1994 to 6.74 million in 2004.  What is the geometric mean annual percent increase?

A)  4.0

B)  1.9

C)  5.5

D)  16.6

E)  47.3

Answer: C      

63.  A sample of the paramedical fees charged by clinics revealed these amounts: $55, $49, $50, $45, $52 and $55.  What is the median charge?

A)  $47.50

B)  $51.00

C)  $52.00

D)  $55.00

Answer: B      

64.  The lengths of time (in minutes) several underwriters took to review applications for similar insurance coverage are: 50, 230, 52 and 57. What is the median length of time required to review an application?

A)  54.5

B)  141.0

C)  97.25

D)  109.0

Answer: A        

 

65.  A bottling company offers three kinds of delivery service – instant, same day and within five days.  The profit per delivery varies according to the kind of delivery.  The profit for an instant delivery is less than the other kinds because the driver has to go directly to a grocery store with a small load and return to the bottling plant. To find out what effect each type of delivery has on the profit picture, the company summarized the data in the following table based on deliveries for the previous quarter.

 

What is the weighted mean profit per delivery?

A)  $72

B)  $110

C)  $142

D)  $97

E)  $66.67

Answer: D         

66.  The U.S. Department of Education reported that for the past seven years 4,033, 5,652, 6,407, 7,201, 8,719, 11,154, and 15,121 people received bachelor's degrees in computer and information sciences.  What is the annual arithmetic mean number of degrees awarded?

A)  About 12,240

B)  About 8,327

C)  About 6,217

D)  About 15,962

67.  Which measure of central location is found by arranging the data from smallest to largest and selecting the middle value?

A)  Arithmetic mean

B)  Median

C)  Mode

D)  Geometric mean

E)  Standard deviation

68.  The number of students at a local university increased from 2,500 students to 5000 students in 10 years.  Based on a geometric mean, the university grew at an average percentage rate of

A)  2,500 students per year

B)  1.071 percent per year

C)  7.1 percent per year

D)  250 students per year

 

 

69.  A question in a market survey asks for a respondent's favorite car color.  Which measure of central location should be used to summarize this question?

A)  Mode

B)  Median

C)  Mean

D)  Geometric mean

70.  Sometimes, data has two values that have the highest and equal frequencies.  In this case, the distribution of the data can best be summarized as

A)  symmetric

B)  bimodal (having two modes)

C)  positively skewed

D)  negatively skewed

 

71.  A disadvantage of using an arithmetic mean to summarize a set of data is

A)  The arithmetic mean sometimes has two values

B)  It can be used for interval and ratio data

C)  It is always different from the median

D)  It can be biased by one or two extremely small or large values.

 

72.  The denominator for a mean of grouped data is:

A)  N, the population size

B)  n, the sample size

C)  The sum of the group frequencies

D)  The number of groups

 

73.  The mean, as a measure of central location would be inappropriate for which one of the following?

A)  Ages of adults at a senior citizen center

B)  Incomes of lawyers

C)  Number of pages in textbooks on statistics

D)  Marital status of college students at a particular university

74.  What is a disadvantage of the range as a measure of dispersion?

A)  Based on only two observations

B)  Can be distorted by a large mean

C)  Not in the same units as the original data

D)  Has no disadvantage

 

 

75.  Rank the measures of dispersion in terms of their relative computational difficulty from least to most difficulty.

A)  Mode, median, mean

B)  Range, mean deviation, variance

C)  Variance, mean deviation, range

D)  There is no difference

  

                                        

 CLICK HERE TO GET THE ANSWER !!!!