Test bank basic statistics for business and economics 4th canadian edition solution

For Order This And Any Other Test Banks And Solutions Manuals, Course, Assignments, Discussions, Quizzes, Exams, Contact us At: johnmate1122@gmail.com CHAPTER 1 WHAT IS STATISTICS? 1.

a. b. c. d. e. f. g. h. i. j.

Interval Ratio Ratio Nominal Ordinal Ratio Nominal Ordinal Nominal Ratio (LO5)

2.

a. b. c. d. e. f.

Ratio Ratio Ratio Ratio Ratio Ratio

(LO5)

3.

Answers will vary

4.

a. b. c. d.

(LO5)

Sample Population Population Sample (LO2)

5.

Qualitative data are not numerical, whereas quantitative data are numerical. Examples will vary by student.

(LO3)

6.

A population is the entire group which you are studying. A sample is a subset taken from a population. (LO2)

7.

Nominal, ordinal, interval, and ratio. Examples will vary.

(LO4)

8.

a.A sample is used because it is difficult to locate every student. b.

A population is employed because the information is easy to find. c.

A population is used because the information is easy to find. d.

A sample works because it is difficult to locate every musical.

(LO2)

9.

a.continuous, quantitative, ratio b. discrete, qualitative, nominal c. discrete, quantitative, ratio d. discrete, qualitative, nominal e. continuous, quantitative, interval f. continuous, quantitative, interval g. discrete, qualitative, ordinal h. discrete, qualitative, ordinal i. discrete, quantitative, ratio (LO3,4&5)

10.

The cell phone provider is nominal level data. The minutes used are ratio level.

Satisfaction is ordinal level.

(LO5)

11.

If you were using the Ridgedale Mall store as typical of all Gap stores then it would be sample data. However, if you were considering it as the only store of interest, then the data would be population data. (LO2)

12.

Various answers.

13.

Based on these findings, we can infer that 270/300 or 90 percent of the executives would move. (LO2)

14.

The clear majority of customers tested (400/500, or 80%) believe this take-out service is excellent. Based on these findings, we can expect a similar proportion of all customers to feel the same way.

(LO2)

15.

a 2010 total sales = 1 000 772; 2011 total sales = 942 973; total sales declined about 6% from 2010 to 2011. b.

Hockey (Men’s Finals) and Hockey – Women’s experienced losses of 17 and 19 percent, respectively. Meanwhile, Hockey (Women’s Finals) gained 9.5 percent and Figure Skating – Juniors about 9 percent. So it would appear that there has been a significant shift within the market from 2010 to 2011. (LO5)

16.

a.Qualitative: type Quantitative: list price, number of bedrooms, full baths and half baths and total square feet. b.

Type is nominal; the rest are ratio. (LO3&5)

17.

a.Type is a qualitative variable; dollars is quantitative. b.

Type is a nominal level variable; dollars is ratio level. (LO3&5)

18.

a.Women and men are qualitative variables; the others are quantitative. b.Year is interval; women and men are nominal; earnings ratio is ratio. (LO3&5)

19.

a. Region is a qualitative variable; average house price is quantitative. b.

Region is nominal; average house price is ratio. (LO3&5)

Chapter 1

(LO5)

2

CHAPTER 2 DESCRIBING DATA: FREQUENCY DISTRIBUTIONS AND GRAPHIC PRESENTATION 1.

Maxwell Heating & Air Conditioning far exceeds the other corporations in sales. Mancell Electric & Plumbing and Mizelle Roofing & Sheet Metal are the two corporations with the least amount of fourth quarter sales.

Mizelle Maxwell Mancell Long Bay J&R Hoden 0

5000

10000 15000 20000 25000 30000

Maxwell has the highest sales, and Mizelle the lowest.

2.

Three classes are needed, one for each player. (LO1)

3.

There are four classes: winter, spring, summer, and fall.

The relative frequencies are 0.1, 0.3, 0.4, and 0.2, respectively. (LO1)

4.

a.

3

Chapter 2

b.

Regular Sickness Maternity Fishing Work sharing Adoption All Benefits

Chapter 2

346.94 323.02 365.57 407.34 97.49 410.03 341.22

0.151 0.141 0.160 0.178 0.043 0.179 0.149

4

c.

(LO2)

5.

a.

Chart of Frequency vs Color 500

Frequency

400

300

200

100

0 White

b.

Black

Lime Color

Orange

Red

5

Chapter 2

Type Number Bright white 130 Metallic black 104 Magnetic lime 325 Tangerine orange 455 Fusion red 286 Total 1300

Chapter 2

Relative Frequencies 0.10 0.08 0.25 0.35 0.22 1.00

6

c.

Pie Chart of Frequency vs Color

Red 22.0%

White 10.0% Black 8.0%

Lime 25.0%

Orange 35.0%

(LO2) 6.

Student loan amounts for 2010. Susan Chan’s loan is the largest.

(LO2) 7.

25 = 32, 26 = 64; therefore 6 classes

8.

25 = 32, 26 = 64 suggests 6 classes. i ³ $29 - $0 = 4.47 Use interval of 5. (LO3)

(LO3)

6 9.

8 27 = 128, 2 = 256 suggests 8 classes i ³

567 - 235

= 41.5 Use interval of 45. (LO3)

8 10.

a.25 = 32, 26 = 64 suggests 6 classes. b.

11.

i ³ 129 - 42 = 14 6

Use interval of 15 and start first class at 40. (LO3)

a.24 =16 suggests 5 classes b.

6/5 = 1.2 Use interval of 1.5 c.

24

7

Chapter 2

d.

e.

12.

Units f Relative frequency 24 to under 25.5 2 0.125 25.5 to under 27 4 0.250 27 to under28.5 8 0.500 28.5 to under 30 0 0.000 30 to under 31.5 2 0.125 Total 16 1.000 The largest concentration is in the 27 up to 28.5 class (8). (LO3)

a.24 = 16, 25 = 32, suggest 5 classes b.

47/5 = 9.4 Use interval of 10. c.

50 d. f Relative frequency 50 to under 60 4 0.20 60 to under 70 5 0.25 70 to under 80 6 0.30 80 to under 90 2 0.10 90 to under 100 3 0.15 Total 20 1.00 e.

The fewest number is about 50, the highest about 100. The greatest concentration is in classes 60 up to 70 and 70 up to 80.

(LO3)

Chapter 2

8

13.

a.

b. c.

14.

a.An interval of 10 is more convenient to work with. The distribution using 10 is: f 15 to under 25 1 25 to under 35 2 35 to under 45 5 45 to under 55 10 55 to under 65 15 65 to under 75 4 75 to under 85 3 Total 40 b.

Data tends to cluster in classes 45 up to 55 and 55 up to 65. c.

d.

15.

Shoppers f 0 to under 3 9 3 to under 6 21 6 to under 9 13 9 to under 12 4 12 to under 15 3 15 to under 18 1 Total 51 The largest group of shopper’s (21) shop at Food Queen 3, 4 or 5 times during a month.

Some customers visit the store only 1 time during the month, but others shop as many as 15 times.

Number of Percent of Shoppers Total 0 to under 3 17.65 3 to under 6 41.18 6 to under 9 25.49 9 to under 12 7.84 12 to under 15 5.88 15 to under 18 1.96 Total 100.00 (LO3)

a. b. c. d. e.

Based on the distribution, the least spent is $15 years (actually $18 from the raw data). The most spent was less than $85. The largest concentration of spending is between $45

up to $65. $ Spent Percent of Total 15 to under 25 2.5 25 to under 35 5.0 35 to under 45 12.5 45 to under 55 25.0 55 to under 65 37.5 65 to under 75 10.0 75 to under 85 7.5 Total 100.0 Histogram 100 5 28 0.28

(LO3)

9

Chapter 2