Carlos Fawcett
Assignment #3
2.42 The following table displays the energy consumption patterns of Australia and
New Zealand. The figure measures the heat content in metric tons (1,000
Kilograms) of oil equivalent. Use a graphical technique to display the
Carlos Fawcett
Assignment #1
1.1 In your own words, define and give an example of each of the following
statistical terms.
a. Population:
Population is a set or the total accounted amount of units in a given data
source.
b. Sample:
Sample is a subset of t
Carlos Fawcett
Assignment #9
6.1 The weather forecaster reports that the probability of rain tomorrow is 10 %
a. Which approach was used to arrive at this number?
Subjective approach
b. How do you interpret the probability?
Subjective approach is the degr
Carlos Fawcett
Assignment #6
4.121 Osteoporosis is a condition in which bone density decreases, often resulting in
broken bones. Bone density usually peaks at age 30 and decreases thereafter. To
understand more about the condition, a random sample of wome
Carlos Fawcett
Assignment #7
5.1 Briefly describe the difference between observational and experimental data.
There are many differences between experimental and observational data gathering.
One of them is in an experiment you observe what happens when y
Carlos Fawcett
Assignment #4 (Revised)
3.80 Gold and other precious metals have traditionally been considered a hedge
against inflation. If this were true, we would expect that a fund made up of precious
metals (gold, silver, platinum, and others) would h
Carlos Fawcett
Assignment #4
3.80 Gold and other precious metals have traditionally been considered a hedge
against inflation. If this were true, we would expect that a fund made up of precious
metals (gold, silver, platinum, and others) would have a stro
Carlos Fawcett
Assignment #2 B
Define the phases of statistical analysis relating to the purchase of a car.
Initial data manipulation. (Collecting)
Assemble data on the vehicle to buy.
1. Description of the vehicle of interest: Sedan, minivan, truck, and
Carlos Fawcett
Assignment #10
7.1 The number of accidents that occur on a busy stretch of highway is a random
variable.
a. What are the possible values of this random variable?
Integers from 0 to infinity or X= cfw_0,1,2,3,.
b. Are the values countable? E
Carlos Fawcett
Assignment #8
5.15 The operations manager of a large plant with four departments wants to
estimate the person-hours lost per month from accidents. Describe a sampling plan
that would be suitable for estimating the plant wide loss and for co
Carlos Fawcett
Assignment #5
4.1 A sample of 12 people was asked how much change they had in their pockets
and wallets. The responses (in cents) are
52 25 15 0 104 44
60 30 33 81 40 5
Determine the mean, median, and mode for these data
Problem 4.1
Mean
St
Carlos Fawcett
Assignment #2
2.3 For each of the following examples of data, determine the type.
a. The weekly closing price of the stock of Amazon.com
Interval
b. The month of highest vacancy rate at a LA Quinta motel
Nominal
c. The size of soft drink (s
Exam 1 study guide
Chapter 1
Descriptive statistics method of organizing, summarizing and presenting data in a
convenience and informative way
Inferential statistics process of making an estimate, prediction based on sample data
Population group of all it