Contemporary Mathematics for Business & Consumers
8th Edition
ISBN: 9781305585447
Author: Robert Brechner, Geroge Bergeman
Publisher: Cengage Learning
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Chapter 21.I, Problem 4RE
To determine
To graph: The standard bar chart of the deluxe sales per month in the south-east territory for Magnum enterprises as the sales manager.
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Consider the following monthly revenue data for an up-and-coming cyber security company.Sales Data
Month
Revenue (Thousands of Dollars)
Month
Revenue (Thousands of Dollars)
11
326326
1010
816816
22
552552
1111
827827
33
535535
1212
846846
44
571571
1313
850850
55
636636
1414
849849
66
685685
1515
854854
77
700700
1616
867867
88
705705
1717
875875
99
787787
1818
881881
The summary output from a regression analysis of the data is also provided.Regression Statistics
Multiple R
0.9183542530.918354253
R Square
0.8433745340.843374534
Adjusted R Square
0.8335854420.833585442
Standard Error
63.399295263.3992952
Observations
1818
ANOVA
dfdf
SSSS
MSMS
FF
Regression
11
346,295.581011346,295.581011
346,295.581011346,295.581011
86.1545245186.15452451
Residual
1616
64,311.53010064,311.530100
4019.4706314019.470631
Total
1717
410,607.111111410,607.111111
Coefficients
Standard Error
tt Stat
P-value
Intercept…
School Type
Cost
30 Year ROI
Annual ROI
Private
$222,700.00
$1,786,000.00
7.70%
Private
$176,400.00
$1,758,000.00
8.40%
Private
$212,200.00
$1,714,000.00
7.80%
Public
$125,100.00
$1,535,000.00
9.10%
Private
$212,700.00
$1,529,000.00
7.40%
Public
$92,910.00
$1,501,000.00
10.10%
Private
$214,900.00
$1,485,000.00
7.30%
Private
$217,800.00
$1,483,000.00
7.20%
Private
$225,600.00
$1,444,000.00
7.00%
Private
$217,300.00
$1,442,000.00
7.10%
Private
$226,500.00
$1,441,000.00
7.00%
Private
$215,500.00
$1,438,000.00
7.20%
Private
$223,500.00
$1,428,000.00
7.00%
Private
$226,600.00
$1,414,000.00
7.00%
Private
$189,300.00
$1,397,000.00
7.50%
Public
$89,700.00
$1,382,000.00
9.90%
Public
$87,030.00
$1,376,000.00
10.00%
Private
$218,200.00
$1,343,000.00
6.90%
Private
$229,900.00
$1,339,000.00
6.70%
Private
$148,800.00
$1,321,000.00
8.10%
Calculate the estimated ‘Annual % ROI’ when the ‘Cost’ (X) is $160,000.
Test the hypothesis:
o H0: β1 = 0
o Ha: β1…
Table 2
Department
Mean
SD
CoefVar
Min
Q1
Median
Q3
Max
IQR
Skewness
Finance
6.052
3.874
64.01
1.630
3.393
4.585
7.500
22.860
4.107
2.00
HR
5.441
3.235
59.45
2.000
3.200
4.100
6.430
21.860
3.230
1.24
IT
5.880
3.887
66.10
0.530
3.250
4.630
6.8
24.980
3.550
2.18
Marketing
6.010
3.737
62.18
1.670
3.475
5.000
6.645
22.200
3.170
2.14
Training
6.095
3.719
61.02
1.500
3.330
5.000
7.640
20.000
4.310
2.00
CoefVar stands for coefficient of variation
graph (1)
The company has hired you to answer the following questions:
Do you think that the salaries in the departments are skewed, justify your answer with proper measure from table (2).
Chapter 21 Solutions
Contemporary Mathematics for Business & Consumers
Ch. 21.I - Use Table 21-1 to answer the following questions...Ch. 21.I - Use Exhibits 21-1 and 21-2 to answer the following...Ch. 21.I - Prob. 3TIECh. 21.I - Prob. 4TIECh. 21.I - Prob. 5TIECh. 21.I - Prob. 6TIECh. 21.I - Prob. 7TIECh. 21.I - Prob. 8TIECh. 21.I - Prob. 9TIECh. 21.I - Prob. 10TIE
Ch. 21.I - Prob. 1RECh. 21.I - TABLE 21-1 Magnum Enterprises Six-Month Sales...Ch. 21.I - Prob. 3RECh. 21.I - Prob. 4RECh. 21.I - TABLE 21-1 Magnum Enterprises Six-Month Sales...Ch. 21.I - Prob. 6RECh. 21.I - Prob. 7RECh. 21.I - BUSINESS DECISION: CHOOSING A CHART
8. You have...Ch. 21.II - Prob. 11TIECh. 21.II - Prob. 12TIECh. 21.II - Prob. 13TIECh. 21.II - Prob. 14TIECh. 21.II - Prob. 15TIECh. 21.II - Prob. 1RECh. 21.II - Prob. 2RECh. 21.II - Prob. 3RECh. 21.II - Prob. 4RECh. 21.II - Prob. 5RECh. 21.II - Prob. 6RECh. 21.II - Prob. 7RECh. 21.II - Prob. 8RECh. 21.II - Prob. 9RECh. 21.II - Prob. 10RECh. 21.II - Determine the mode of the following sets of...Ch. 21.II - Prob. 12RECh. 21.II - Prob. 13RECh. 21.II - Prob. 14RECh. 21.II - Prob. 15RECh. 21.II - Prob. 16RECh. 21.II - Prob. 17RECh. 21.II - The following numbers represent the gallons of...Ch. 21.II - You are the owner of The Dependable Delivery...Ch. 21.II - Prob. 20RECh. 21.III - Prob. 17TIECh. 21.III - Prob. 18TIECh. 21.III - Prob. 1RECh. 21.III - You are the sales manager of the Esquire...Ch. 21.III - Prob. 3RECh. 21.III - BUSINESS DECISION: RELATIVE FREQUENCY...Ch. 21 - 1. The systematic process of collecting,...Ch. 21 - 2. Statistical procedures that deal with the...Ch. 21 - A collection of related data arranged for ease of...Ch. 21 - Prob. 4CRCh. 21 - 5. The horizontal axis of a line chart is known as...Ch. 21 - Prob. 6CRCh. 21 - To construct a pie chart, we multiply each...Ch. 21 - Prob. 8CRCh. 21 - 9. The _______ is the midpoint value of a set of...Ch. 21 - Prob. 10CRCh. 21 - Prob. 11CRCh. 21 - Prob. 12CRCh. 21 - Prob. 13CRCh. 21 - Prob. 14CRCh. 21 - 1. The following data represent the monthly sales...Ch. 21 - Prob. 2ATCh. 21 - Prob. 3ATCh. 21 - You have just been hired as the quality control...Ch. 21 - 5. You are the human resource director for Apollo...
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