1. The four basic sampling techniques are random, systematic, stratified, and cluster sampling.
2. There are a couple of reasons why samples are used in statistics. The first is that it may be
impossible to conduct statistical research on an entire popula
What are at least three sampling methods? What are the advantages and disadvantages of
these sampling methods? What sampling method might you use to solve a problem within
your organization? Why?
The sampling methods are random, systematic, stratified, an
The truth is that Trump is a performance artist. He is an
executioner. And for the most part, he does treat the campaign
trail as a stage for his foul-mouthed comedic routine.
Of course, none of this is to say that there aren't perfectly good
The Anti-Terrorism Act became law in June 2015. The new law was opposed by the NDP but
supported by the Liberals.
Under the law it is a criminal offence to encourage someone to carry out a terror attack even if the
attack never happens.
Police were also g
After the financial crisis, businesses became more cost-focused and consequently
marketers were viewed as not financially adept enough and were given permission to
delegate commercial and financial responsibility to procurement managers. Its a
Gregory Daco, head of U.S. macroeconomics, Oxford
Economics: The three dominant drags on the US economy
are most visible in the latest industry report. Reduced oil
capex is weighing on mining activity while a strong US
currency and sluggish global demand
In a normal distribution, what percent of observations fall between the mean and one standard
deviation? In a normal distribution, 95% of the data is located between the mean and how
many standard deviations? In a normal distribution of 2,216 observations
This manufacturer and refiner of transportation fuels and petrochemical
products has a market capitalization of about $28 billion. Like Phillips,
Valero grew earnings in 2014 and 2015, and its expecting to see a decline
this year and a rebound in 2017. An
The stereotype often involves starting work late, taking two-hour-long lunches and having
an afternoon siesta, but Spaniards actually work some of the longest and most inflexible
hours in Europe, something which is having a serious impact on work-life bal
Conversely, if Trump trounces his rivals in Michigan, the nights big
prize with 59 delegates, is there any stopping him?
Turning to the South, a Trump loss in Mississippi would be a huge
setback. He has won all four neighboring states: Alabama,
One of the most universally popular parts of Obamacare is
the requirement that insurance companies cant
discriminate against people who have pre-existing
conditions like diabetes or a prior bout with cancer. The
problem is how to keep everybody from waiti
Renault Sport will be managed by two entities: Renault Sport Racing
and Renault Sport Cars.
Renault Sport Racing will encompass all Renault's motorsport
activities, including the Renault Sport Formula One Team, Renault
e.dams, Formula Renault 2.0, Renault
3D printing belongs to a class of techniques known as additive manufacturing, or building
objects layer by layer. The most common household 3D-printing process involves a print head,
which allows for any material to be extruded or squirted through a nozzl
Donald Trump was back on the offense after a difficult few days,
demanding that competitor John Kasich drop out of the Republican
presidential race and asserting that the U.S. is headed for a very
massive recession and a share market downturn.
At this moment the constituencies that make up the so-called the
Obama Coalition are fractured between Clinton and Sanders. Clinton
has support of more unions (the upcoming AFL-CIO executive council
meeting will be decisive), African American and Latino v
Team B LTA (Week 5)
Exercises 1 through 8 include questions that contain a flaw. Identify the flaw and rewrite
the question, following the guidelines presented in this section.
1. Will you vote for John Doe for class president
What is the purpose of a sample survey? What are potential mistakes made in developing a
sample survey? When is it appropriate to use a sample survey? How might you use a sample
survey in your organization?
The purpose of a sample survey is to get people
How are the range, variance, and standard deviation related? How do they vary from one
another? How is the standard deviation linked to the mean?
The range is the difference between the highest and lowest value in a data set. The variance
is the average o
Classify each as nominal-level, ordinal-level, interval-level, or ratio-level measurement.
A) Pages in the city of Cleveland telephone book.
B) Rankings of tennis players.
C) Weights of air conditioners.
D) Temperatures inside 10 re
Why might you use statistical notation? What are the advantages of using statistical notation?
What are the disadvantages of using statistical notation? Where have you seen statistical
Statistical notation is used as a shorthand technique that h
How are the mean, median, and mode similar? How are the mean, median, and mode
different? For a given set of data, might the mean, median, and mode be the same? Give
specific examples to illustrate your point.
The mean is the average. You take all the val
What is the difference between a population and a sample? Provide an example of a
population and a sample. Why might you use a sample instead of a population?
A population is all subjects (human or animal) that are being studied. A sample is a group of
What is a misleading graph? What are the characteristics of a misleading graph?
What are possible consequences of using a misleading graph? Give a specific
example to illustrate your point.
A misleading graph is one that is drawn inappropriately or trunca