CHAPTER 4 SECTION 1: NUMERICAL DESCRIPTIVE TECHNIQUES
1. Which of the following statistics is a measure of central location?
a. The mean
b. The median
c. The mode
d. All of these choices are true.
REF: SECTION 4.1
2. Which me
CHAPTER 4 SECTION 3: NUMERICAL DESCRIPTIVE TECHNIQUES
142. When extreme values are present in a set of data, which of the following descriptive summary
measures are most appropriate?
a. Coefficient of variation and range
b. Mean and standa
CHAPTER 7 SECTION 4: RANDOM VARIABLES AND DISCRETE PROBABILITY
175. Which of the following is not a characteristic of a binomial experiment?
a. There is a sequence of identical trials.
b. Each trial results in two or more out
CHAPTER 9 SECTION 1: SAMPLING DISTRIBUTIONS
1. The standard deviation of the sampling distribution of is also called the:
a. central limit theorem.
b. standard error of the sample mean.
c. finite population correction factor.
CHAPTER 12 SECTION 1: INFERENCE ABOUT A POPULATION
1. Researchers determined that 60 Kleenex tissues is the average number of tissues used during a cold.
Suppose a random sample of 100 Kleenex users yielded the following data on the number
CHAPTER 12 SECTION 2: INFERENCE ABOUT A POPULATION
50. A random sample of 25 observations is selected from a normally distributed population. The sample
variance is 10. In the 95% confidence interval for the population variance, the upper
I CHAPTER 1 I CHAPTER 2 I CHAPTER 6
Population vs. Sample: Variables and Data Types: Distribution Table Assigning Probabilit -
Exhaustive: All possible outcomes are included.
Population: All members of a defined group Variable: A characteristic of a popul
CHAPTER # 1Statistics is a way to get information from data.
Population is the entire set of all items under study, frequently very large,
Sample is a set of data drawn from the population, potentially very large, but
less than the pop
Describe a Single Population
Compare 2 Populations
Mean ( )
Variability (2- test )
x z / 2 ( / n ) x t / 2 ( s /
Rejection Region :
Z < Z , Z > Z
Rejection Region :
t < t ,n 1 , t > t ,n 1
Z < Z / 2 or
Sometimes two variables appear related:
The motivation for using the technique:
smoking & lung cancer ( possible relationship: the more you smoke the
height & w
Inference About One
Michael Rochon | Distribution is NOT permitted | Use is restricted to ADMS 2320 Registered INTERNET Students ONLY
Chart on pg. 514
Before we begin this chapter I want to show you som
]CHAPTER 12 SECTION 3: INFERENCE ABOUT A POPULATION
80. Under what condition(s) does the test statistic for p have an approximate normal distribution?
a. When np > 5.
b. When np and np(1 p) are both > 5.
c. When n > 30.
d. When np and n(1