STAT Formulas
Total number of data values=number of elements x number of variables
Size of Class=Range/Number of Classes
Data Range=Highest Value-Lowest Value
Chapter 1
Statistics is the study of estimation and prediction, providing a way to get information from data.
Population Parameter: parameter is a descriptive measure of a population.
The Sample: Set
Quiz 3
Question 1
1. Table 1
What is the mean of the order data set?
251.46
0.5 points
Question 2
1. Compute the range of the data in table 1
367
0.5 points
Question 3
1. Compute the sample variance o
Quiz 2
Question 1
1. A graphical method that will assist in the understanding of the relationship
between two variables is a:
Scatter Diagram
0.25 points
Question 2
1. A graphical method that can be u
1. Employees in a large company are entitled to 15-minute coffee breaks. A random sample
of the duration of coffee breaks for 10 employees was taken with the times shown
below. Assuming the times are
Quiz 1
Question 1
1. Tony Zamora, a real estate investor, has just moved to Clarksville and wants
to learn about the city's residential real estate market. Tony has randomly
selected 25 house-for- sal
QBA 337 Mock Test # 2
QBA 337-004
Instructions: You are to use only your pencil and your calculator. All other materials are provided for you. Write only on this mock
test. Show all work.
1. Most indi
Chapter 9 Test Review
Step 1
The null hypothesis Ho: Assumed to be true until we can prove otherwise
Step 2
The alternative hypothesis Ha: Will be accepted as true if we can disprove Ho
Step 3
The tes
Mutual Funds - Load
Return
American National Growth
15.51
Arch Small Cap Equity
14.57
Bartlett Cap Basic
17.73
Calvert World International
10.31
Colonial Fund A
16.23
Common Sense Growth
16.04
Corefun
1. A line chart that has no axes but is used to provide information on overall trends for time series
data is called: A sparkline
2. A clusters durability can be measured by the difference between the
Quiz 5
Question 1
1. is a random variable with the probability function: f(x) = x/6 for x = 1,2 or 3
The expected value of x is 2.333
0.3
33
0.5
00
2.0
00
2.3
33
0.5 points
Question 2
1. Forty percent
Quiz 4
Question 1
1. In a random sample of UTC students, 50% indicated they are business
majors, 40% engineering majors, and 10% other majors. Of the business
majors, 60% were females, whereas 30% of
Quiz 6
Question 1
1. The weight of football players is normally distributed with a mean of 200
pounds and a standard deviation of 25 pounds. The probability of a player
weighing more than 241.25 pound
Introduction
to
Probability
Chapter 4
Chapter 4
Introduction to
Probability ( )
Experiments, Counting Rules, and
Assigning Probabilities
Events and Their Probability
Some Basic Relationships of
Probab
Quiz 2
Question 1
1. A graphical method that will assist in the understanding of the relationship
between two variables is a:
crosstabulation
scatter
diagram
stem-and-Ieaf
display
bar graph
0.25 point
Quiz 6
Question 1
1. The weight of football players is normally distributed with a mean of 200
pounds and a standard deviation of 25 pounds. The probability of a player
weighing more than 241.25 pound
Quiz 2
Question 1
1. A graphical method that will assist in the understanding of the relationship
between two variables is a:
crosstabulation
scatter diagram
x
stem-and-Ieaf
display
bar graph
0.25 poi
Quiz 3
Question 1
1. Table 1
What is the mean of the order data set?
251.46
0.5 points
Question 2
1.
1.
Compute the range of the data in table
367
0.5 points
Question 3
1. Compute the sample variance
Data Sources
The data is from companys date report system. There are three WHs which are WH538, WH43,
and WH3.To measure value, Consumer Reports developed a statistic referred to as a value score.
The
EXAM 3
Questions 1 - 10
You are the manager of a chain specialty clothing store and receive a call from your regional
manager wanting to know what would be the expected sales per customer for the next
EXAM 2
Question 1 4
The personnel department of a large corporation has classified its employees according to their
gender and their age. The proportions of employees falling into the various categori
Final Exam QBA 237
Question 1
An auditor is preparing for a physical count of inventory as a means of verifying its value. Items
counted are reconciled with a list prepared by the storeroom supervisor
Exam 4 Part 2 QBA 237
A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of
their product. To do this, the company randomly chooses 6 small cities and o
QBA 337 Study Guide Test 1
CH 1
statistics can refer to numerical facts such as averages, medians, percents, and index numbers
that help us understand a variety of business and economic situations, or
Caileb Newby Case 8
1. Based on the table, what are your preliminary findings?
After developing a pivot table that shows the number of wines that were classified as classic, outstanding, very good, go