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CHAPTER ONE
DATA AND STATISTICS
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MULTIPLE CHOICE QUESTIONS
1. A survey to collect data on the entire population is
a. a census
b. a sample
c. a population
(1. an inference
Answer: a
2. In Excel, a worksheet that displays the da
Chapter 11
Inferences About Population Variances
MULTIPLE CHOICE
1. A sample of 51 elements is selected to estimate a 95% confidence interval for the variance of the
population. The chi-square values to be used for this interval estimation are
a. -1.96 an
Chapter 12
Comparing Multiple Proportions, Test of
Independence and Goodness of Fit
MULTIPLE CHOICE
1. A population where each element of the population is assigned to one and only one of several classes
or categories is a
a. multinomial population
b. Poi
Chapter 14
Simple Linear Regression
MULTIPLE CHOICE
1. In a regression analysis, the error term is a random variable with a mean or expected value of
a. zero
b. one
c. any positive value
d. any value
ANS: A
PTS: 1
TOP: Regression Analysis
2. The coefficie
Chapter 10
Inference About Means and Proportions with
Two Populations
MULTIPLE CHOICE
1. If we are interested in testing whether the proportion of items in population 1 is larger than the
proportion of items in population 2, the
a. null hypothesis should
5/21/2013
by Thang N. Nguyen
GRT 2012
Chapter 0
Core Concepts and Techniques
1
Chapter
0
Chapter 0: Core Concepts and Techniques
M1: Descriptive
statistics
Chapters 1 and
2
M2: Probability
foundation
Chapters 3, 4 and
5
Connection
between
descriptive and
Chapter 01 - An Introduction to Business Statistics
Chapter 01
An Introduction to Business Statistics
True / False Questions
1. A population is a set of existing units.
True False
2. If we examine some of the population measurements, we are conducting a c
Two axioms:
Axiom 1: 0 P(x) 1 and Axiom 2: P(x) = 1
a. Experiment with a coin: a fair coin when being tossed has two outcomes:
H and T. Probability of H occurrence or P(H) = and probability of T
occurrence, i.e. P(T) = , thus they satisfy two axioms of pr
PROBLEM
1. The average price of cell phones manufactured by Ahmadi, Inc. is $98 with a standard deviation of
$12. Furthermore, it is known that the prices of the cell phones manufactured by Ahmadi are normally
distributed.
a. What percentage of cell phone
PROBLEM
1. Thirty-two percent of the students in a management class are graduate students. A random sample of 5
students is selected. Using the binomial probability function, determine the probability that the
sample contains exactly 2 graduate students?
02.3.2: Deterministic and Probabilistic Data in Population and
Samples
We are leaving the domain of data where they are readily available,
such as those collected from transaction-processing systems or
surveys. These data are considered deterministic (how