1.1 For the following situation, indicate whether the statistical application is primarily descriptive or inferential.
“The manager of Ann’s Fabric Shop has collected data for 10 years on the number of each type of dress fabric that has been sold at the store. She is interested in making a presentation that will illustrate these data effectively.”

Suggested Answer:
This application is primarily descriptive in nature. The owner wishes to develop a presentation. He will most likely use charts, graphs, tables and numerical measures to describe his data.

1.2 Consider the following graph that appeared in a company
annual report. What type of graph is this is this? Explain

This is clearly a bar chart. A bar chart displays values associated with categories. In this case the categories are the departments at the food store. The values are the total monthly sales (in dollars) in each department.

Note: A histogram has no gaps and the horizontal axis represents the possible values for a numerical variable.
1.18

Explain the difference between a closed-end question and an
open-end question.
Closed-end questions require the respondent to select from a short list of defined choices.
Open-end questions allow respondents the freedom to respond
with any value, words, or statements of their own choosing.
Note: Demographic questions are questions relating to
respondent’s characteristics, backgrounds, and attributes. Example: Gender, Marital Status etc

1.32. Describe the difference between a population and a sample. A population is a set of all objects of interests or the
measurements obtained from all objects or individuals of
interest.
A sample is simply a subset of the population.

1.49 For each of the following, indicate whether the data are cross sectional or time series.
a. Quarterly unemployment rates
b. Unemployment rates by state
c. Monthly sales
d. Employment satisfaction data for a company
a. Time-series
b. Cross-sectional
c....

...2.41
a.
Number of Internet Searches
Percentages
A few search results 23
First page of search results 39
First two pages 19
First three pages 9
More than first three pages 10
b.
Pie charts and bar graphs are two ways of...

...Statistics 5371 Final Exam Review Fall 2012.
1. Suppose a researcher wants to design a new study with a power of 0.8 and a significance of 0.05 to test whether the caffeine content for a brand of coffee is really 100mg. A previous study gave a mean caffeine level for this brand of 110 mg and a standard deviation of 7 mg. Use PROC POWER to determine how many cups of coffee need testing.
2. A company did a study to estimate the effect of different promotional strategies on the market...

...Tutorial Questions for Exploratory Data Analysis – Summary Statistics & Graphs
1. Customers of a particular bank rated the service provided by the bank on a scale of one to ten, correct to one decimal point. The bank categorised their customers as either (1) Private Account holders or (2) Business Account holders. The information below summarises customer attitudes towards the quality of service provided by the bank. Use the output to answer the questions below.
a) Briefly...

...Definition of Statistics, Scope and importance of Statistics:Statistics in business and management: Frequency distribution: Parts of table:
Definition of Statistics:
1. Statistics can be defined as the collection presentation and interpretation of numerical data.- Croxton and Crowed.
2. Statistics are numerical statement of facts in any department of enquiry placed interrelation to each other.- Bouly.
3. Statistics are measurement, enumerations or estimates of natural or social...

...WILMINGTON UNIVERSITY
CLASS INFORMATION & SCHEDULE
FACULTY MEMBER: TERM:
COURSE TITLE:
COURSE NUMBER: MBA 6100
OFFICE HOURS/METHOD OF CONTACT:
I. METHODOLOGY:
A. Teaching Methods: Distance learning course
Announcements and instructor guidance; assigned readings; homework problems, chapter information, textbook power point files, and case study.
This course requires stable and regular access to the internet as well as students’ ability to work independently and...

...CGE13101 Understanding Society Through Statistical Reasoning
Tutorial 3
1. A wholesale appliance distributing firm wished to study its accounts receivable for two successive months. Two independent samples of 50 accounts were selected for each of the two months. The results have been summarized below.
Frequency distribution for accounts receivable
Amount
March Frequency
April Frequency
$0 - under $2,000
$2,000 - under $4,000
$4,000 - under $6,000...

...survey was taken in campus parking lots. Variables – There are three categorical variables and one quantitative variable. Make, country of origin, and type of vehicle are categorical variables, and age of vehicle is a quantitative variable.
16. Stats students. Who – Students in a statistics class. What – Height (units not specified, but presumably in cm or metres), shoe size, sex, degree program, and birth order. When – Not specified. Where – Not specified. Why – The...