1-20chapter stats

26 c 5556 d 8889 e 3333 137 the average life of

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ings ratio for a Stereo equipment manufacturing company between 1998 and 2002. Determine the percentage change in the P/E ratios from 1999 to 2000. A. 23.97% B. 31.53% C. 27.26% D. -31.53% E. -23.97 140. The following table shows the Price-to-Earnings ratio for a Stereo equipment manufacturing company between 1998 and 2002. The annual percentage growth rate of the P/E ratios are also calculated and given below: Calculate the geometric mean growth rate increase or decrease over the period from 1998 to 2002. A. -.259 B. -.139 C. -.181 D. .861 E. .741 1-157 Chapter 01 - An Introduction to Business Statistics 141. Suppose that a company's annual sales were $1,200,000 in 1999. The annual growth rate of sales from 1999 to 2000 was 16%, from 2000 to 2001 was -5%, and from 2001 to 2002 was 22%. The geometric mean growth rate of sales over this three-year period is calculated as 10.37%. Use the geometric mean growth rate and determine the forecasted sales for 2004. A. 1,780,678 B. 1,200,014 C. 1,965,337 D. 1,613,371 E. 1,422,197 142. The following frequency table summarizes the ages of 60 shoppers at the local grocery store. Calculate the approximate sample mean for this data (mean for the grouped data). A. 37.50 years B. 36.25 years C. 32.25 years D. 40.25 years E. 45.50 years 1-158 Chapter 01 - An Introduction to Business Statistics 143. The following frequency table summarizes the ages of 60 shoppers at the local grocery store. The sample mean for the above frequency table is calculated as 36.25. Calculate the approximate sample standard deviation for this data set. A. 181.08 B. 184.15 C. 26.83 D. 13.46 E. 13.57 144. Personnel managers usually want to know where a job applicant ranked in his or her graduating class. With the grade point average of 3.83, Michelle Robinson graduated above the 93rd percentile of her graduating class. What is the percentile rank of a student whose GPA was the median GPA. A. 25th B. 50th C. 75th D. 10th E. 93rd 1-159 Chapter 01 - An Introduction to Business Statistics 145. The Rivertown city council is attempting to choose one of four sites (A,B,C or D) as the location for its new emergency facility. After the new emergency facility becomes available for service, the current emergency facility will be shut down. The project manager has estimated the following response times in minutes from each of the proposed sites to the four areas that must be served by the emergency facility. The number of emergency runs from the current emergency facility to each of the four areas over the past year is as follows: Compute the weighted mean response time from the proposed locations and determine which proposed site should be selected for the new emergency facility. A. Site A B. Site B C. Site C D. Site D 1-160 Chapter 01 - An Introduction to Business Statistics 146. Researchers wish to study fuel consumption rates based on speed. The data from 10 cars is below: It can be shown that for these data: 2 = 267.6, Calculate the sample covariance. A. -270.2 B. -30.02 C. -27.02 D. -74.58 E. -82.86 = 41.9, = 17.8, = -270.2 1-161 2 = 2352.9, Chapter 01 - An Introduction to Business Statistics 147. Researchers wish to study fuel consumption rates based on speed. The data from 10 cars is below: It can be shown that for these data: Calculate the sample correlation coefficient. A. 0.12 B. -0.12 C. -0.36 D. -0.34 E. 0.34 1-162 Chapter 01 - An Introduction to Business Statistics 148. In a study of the factors that affect success in economics, data were collected for 8 business students. Scores on a calculus placement test are given with economics final exam scores. The data are below: It can be shown that for these data: 2 = 545.875, Calculate the sample covariance. A. 17.59 B. 7.93 C. 2.00 D. 33.93 E. 20.11 = 17.75, = 70.38, = 140.75 1-163 2 = 237.50, Chapter 01 - An Introduction to Business Statistics 149. In a study of the factors that affect success in economics, data were collected for 8 business students. Scores on a calculus placement test are given with economics final exam scores. The data are below: It can be shown that for these data: = 17.75, = 70.38, = 545.875, = 140.75 Calculate the sample correlation coefficient. A. 0.15 B. 0.11 C. 0.39 D. -0.39 E. -0.11 1-164 = 237.50, Chapter 01 - An Introduction to Business Statistics 150. In a study of employee stock ownership plans, data was collected at seven companies on satisfaction with the plan and the amount of organization commitment. It can be shown that for these data: , , Calculate the sample covariance. A. 0.3164 B. 0.2711 C. 0.3717 D. 0.3250 E. 0.3810 1-165 , Chapter 01 - An Introduction to Business Statistics Chapter 03 Descriptive Statistics: Numerical Methods Answer Key True / False Questions 1. The median is the measure of central tendency that divides a population or sample into four equal parts. FALSE AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Easy Topic: Central Tendency 2. The population mean is the average of the population measurements. TRUE AACSB: Reflective Thin...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online