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ID: MST.FET.IS.SC.01.0010A
A market research firm has carried out an observational study on the chief executives from a random
selection of the law firms in the country. With reference to this country, the group of chief executives that
were stud
Chapter 1
Introduction to statistics
1
Statistical concepts
Why study statistics?
Suppose youre in a situation where you want to
answer a question or explain something
e.g. Do men earn more than women?
You can collect and analyze data
Then, you use t
Chapter 3
Measuring data
1
Measuring data versus presenting data
We present data to help us draw meaning from it
But pictures of data are subjective
Theyre also not susceptible to rigorous inference
Measuring data is less subjective, more rigorous
Th
POS 401 Chapter 3 Key Points
Essential points
The following points are essential for the rest of the semester.
1. How to calculate and interpret the mean, median and mode. How to identify the median and mode in
a data table or plot.
Contrary to the textb
POS 401 Chapter 4 Key Points
Essential points
The following points are essential for the rest of the semester.
1. You should understand the difference between a deterministic and a probabilistic process. Probabilistic
is essentially what Thompson refers t
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ID: MST.FET.PD.PND.01.0010A
As part of a study into the effectiveness of television advertizing in his local area, Huw conducts a survey where he asks a sample of
people how many hours of television they watch per week. The data from this survey
As part of a study into the effectiveness of television advertizing in his local area, Huw conducts a survey where he asks a sample of
people how many hours of television they watch per week. The data from this survey is summarized in the following freque
The Mean Corporation has developed a new soft drink flavor and is considering taking it into mass production. They decide to offer
samples of the drink to 50 people in order to get some idea of how well the drink may sell. The 50 people are asked if they
Presenting numerical data [feedback
page]
This is a feedback page.
You can print this page or bookmark it to return later. When you are ready, complete this question set by clickingfinish. You will
then see your final score and a summary of the learning o
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ID: MST.FET.PD.PR.01.0020A
Factory A of the Mean Corporation produces electric toothbrushes. The manager is getting a bit suspicious that so many of these
toothbrushes are faulty in one way or another. She strongly suspects Brad, John and Steve o