# STAT 200 Week 2 Homework Problems (A+ Solutions)

STAT 200 Week 2 Homework Problems (A+ Solutions)
\$11.99
• Description

2.2.2

The median incomes of females in each state of the United States, including the District of Columbia and Puerto Rico, are given in table #2.2.10 (“Median income of,” 2013).  Create a frequency distribution, relative frequency distribution, and cumulative frequency distribution using 7 classes.

Table #2.2.10: Data of Median Income for Females

 \$31,862 \$40,550 \$36,048 \$30,752 \$41,817 \$40,236 \$47,476 \$40,500 \$60,332 \$33,823 \$35,438 \$37,242 \$31,238 \$39,150 \$34,023 \$33,745 \$33,269 \$32,684 \$31,844 \$34,599 \$48,748 \$46,185 \$36,931 \$40,416 \$29,548 \$33,865 \$31,067 \$33,424 \$35,484 \$41,021 \$47,155 \$32,316 \$42,113 \$33,459 \$32,462 \$35,746 \$31,274 \$36,027 \$37,089 \$22,117 \$41,412 \$31,330 \$31,329 \$33,184 \$35,301 \$32,843 \$38,177 \$40,969 \$40,993 \$29,688 \$35,890 \$34,381

(a) Create a frequency distribution, percent frequency distribution, and cumulative percent frequency distribution using 7 classes. Use the method described in your text to develop the class limits.

(b) Create an absolute frequency histogram for the data in table #2.2.10. Describe the shape and any findings you can from the graph.

(c) Create an ogive for the data in table #2.2.10.  Describe any findings you can from the graph.

2.3.4

Table #2.3.7 contains the value of the house and the amount of rental income in a year that the house brings in (“Capital and rental,” 2013).  Create a scatter plot and state if there is a relationship between the value of the house and the annual rental income.

Table #2.3.7: Data of House Value versus Rental

 Value Rental Value Rental Value Rental Value Rental 81000 6656 77000 4576 75000 7280 67500 6864 95000 7904 94000 8736 90000 6240 85000 7072 121000 12064 115000 7904 110000 7072 104000 7904 135000 8320 130000 9776 126000 6240 125000 7904 145000 8320 140000 9568 140000 9152 135000 7488 165000 13312 165000 8528 155000 7488 148000 8320 178000 11856 174000 10400 170000 9568 170000 12688 200000 12272 200000 10608 194000 11232 190000 8320 214000 8528 208000 10400 200000 10400 200000 8320 240000 10192 240000 12064 240000 11648 225000 12480 289000 11648 270000 12896 262000 10192 244500 11232 325000 12480 310000 12480 303000 12272 300000 12480

2.3.8

The economic crisis of 2008 affected many countries, though some more than others.  Some people in Australia have claimed that Australia wasn’t hurt that badly from the crisis.  The bank assets (in billions of Australia dollars (AUD)) of the Reserve Bank of Australia (RBA) for the time period of March 2007 through March 2013 are contained in table #2.3.11 (“B1 assets of,” 2013).  Create a time-series plot and interpret any findings.

Table #2.3.11: Data of Date versus RBA Assets

 Date Assets in billions of AUD Mar-2006 96.9 Jun-2006 107.4 Sep-2006 107.2 Dec-2006 116.2 Mar-2007 123.7 Jun-2007 134.0 Sep-2007 123.0 Dec-2007 93.2 Mar-2008 93.7 Jun-2008 105.6 Sep-2008 101.5 Dec-2008 158.8 Mar-2009 118.7 Jun-2009 111.9 Sep-2009 87.0 Dec-2009 86.1 Mar-2010 83.4 Jun-2010 85.7 Sep-2010 74.8 Dec-2010 76.0 Mar-2011 75.7 Jun-2011 75.9 Sep-2011 75.2 Dec-2011 87.9 Mar-2012 91.0 Jun-2012 90.1 Sep-2012 83.9 Dec-2012 95.8 Mar-2013 90.5

3.1.2

The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Pacific Ocean are listed in table #3.1.8 (Lee, 1994).  Find the mean, median, and mode.

Table #3.1.8: Lengths of Rivers (km) Flowing to Pacific Ocean

 River Length (km) River Length (km) Clarence 209 Clutha 322 Conway 48 Taieri 288 Waiau 169 Shag 72 Hurunui 138 Kakanui 64 Waipara 64 Rangitata 121 Ashley 97 Ophi 80 Waimakariri 161 Pareora 56 Selwyn 95 Waihao 64 Rakaia 145 Waitaki 209 Ashburton 90

3.1.8

State which type of measurement scale each represents, and then which center measures can be used for the variable?

a.) You collect data on the height of plants using a new fertilizer.

b.) You collect data on the cars that people drive in Campbelltown, Australia.

c.) You collect data on the temperature at different locations in Antarctica.

d.) You collect data on the first, second, and third winner in a beer competition.

3.1.12

An employee at Coconino Community College (CCC) is evaluated based on goal setting and accomplishments toward goals, job effectiveness, competencies, CCC core values.

Suppose for a specific employee, goal 1 has a weight of 20%, goal 2 has a weight of 20%, goal 3 has a weight of 10%, job effectiveness has a weight of 25%, competency 1 has a goal of 4%, competency 2 has a goal has a weight of 3%, competency 3 has a weight of 3%, competency 4 has a weight of 5%, and core values has a weight of 10%.

Suppose the employee has scores of 2.0 for goal 1, 2.0 for goal 2, 4.0 for goal 3, 3.0 for job effectiveness, 2.0 for competency 1, 3.0 for competency 2, 2.0 for competency 3, 3.0 for competency 4, and 4.0 for core values.

a) Find the weighted average score for this employee. Provide units. Show work or a screen shot of the software used.

b) If an employee that has a score less than 2.5, they must have a Performance Enhancement Plan written. Does this employee need a plan? Provide your answer as a stand-alone, complete sentence, referencing the standard against which your decision is based.

3.2.6

Print-O-Matic printing company spends specific amounts on fixed costs every month.  The costs of those fixed costs are in table #3.2.13.

Table #3.2.13: Fixed Costs for Print-O-Matic Printing Company

 Monthly charges Monthly cost (\$) Bank charges 482 Cleaning 2208 Computer expensive 2471 Lease payments 2656 Postage 2117 Uniforms 2600

• Find the mean and median.
• Find the range.
• Find the variance and standard deviation.

Our Score
[Total: 0 Av: 0]
Find Us On Social Media