MATH HOMEWORK HELP

 

Exercise 1.There  were  850 students in the schoolofbusiness administrationin a university.  The schoolofferfourmajors,namely: Accounting,Finance,Management and Marketing.The following table shows the numberofstudentsenrolled in each major:

Major

Number of Students

Accounting

320

Finance

160

Management

280

Marketing

90

                  TOTAL

 

 

(1.)      Develop a relative frequency distribution

 

 

 

 

(2.)      Develop a percentagefrequency distribution

 

 

 

 

 

 

(3.)      Construct a Linegraphforthenumberofstudentsenrolled foreach major.

 

 

 

Exercise 2.  The following stem and leaf plot shows the scores on a recent examination of  students in College Algebra.Write the answers  in the spaces  provided.

STEM

LEAF

     5

6 8

     6

1 2 2 4 8

     7

0 4 6 6 

     8

0 4 4 6 6 6 6 6 

     9

0 2 6

   10

0

 

 

 

2.a.   How many students took the test?

 

 

2.a. _________________________________

 

 

2.b.     What were the highest and lowest scores?

 

 

2.b.__________________________________

2.c.     How many students scored 60 or higher?

 

 

2.c. __________________________________

 

Exercise 3.  Show all solutions/process of your work. Write the answers  in the spaces  provided.

 

67

76

74

71

78

80

78

80

82

67

88

72

80

85

76

84

82

83

89

72

82

77

79

86

77

69

70

82

86

78

The scores of a sample of 30 students in Calculus

are shown in the table.

          Construct a dot plot for the data.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Exercise 4. The revenues of the top eleven personal computer manufacturers are given (in hundred millions).

 

15

17

23

26

27

35

72

88

91

98

102

 

 

 

3.a.      Compute the first quartile.

 

 

3.a. Q1_____________________________________________

 

3.b.      Compute the third quartile.                        

 

 

3.b. Q3_____________________________________________

 

 

3.d  Compute the median

 

3.c. M_____________________________________________

 

Exercise 5.The profile of graduates from the College of Business in terms of their major fields are in the table below. Construct a relative and percent frequency distributions  in the columns provided and answer the questions that follow in the next page.

 

Major

Frequency

Relative Frequency

Percent Frequency

Accounting

85

 

 

Administration

80

 

 

Finance

50

 

 

Computer Science

45

 

 

Marketing

40

 

 

Total

300

 

 

 

Based on the above table, answer the following questions:

(1) What is the percentage of   graduates whose major is Computer Science?                 ________

(2) What is the percentage of   graduates whose major is Administration?                      ________

(3) What is the percentage of   graduates whose major is Accounting?                           ________

(4) What is the percentage of   graduates whose majors are Finance and Accounting?  ________

(5) Which has the lowest percentage of graduates among the different majors? __________________

 

Exercise 6.Read the data below showing the annual salaries of the Quality Control managers in selected universities.  Solve to provide answers to questions 6.1, 6.2  and6.3:Show computation.

 

$65,000           $44,000           $48,000           $50,000

$49,000           $55,000           $52,000           $70,000

$55,000           $40,000           $49,000           $65,000

$65,000           $65,000           $65,000           $50,000

 

 

6.1)  What is the MODE of the annual salaries ____________________?

 

 

6.2)  The RANGE of the annual salaries is____________________?

 

 

6.3)  The MEAN of the annual salaries is____________________?

 

 

 

 

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