When you have a large amount of information on a topic, it is helpful to organize or summarize the information so that it is easier to access. One way to organize a large amount of numerical data is through the use of statistics. Statistics is the mathematical study of numerical data.
When you have a large amount of information on a topic, it is helpful to organize or summarize the information so that it is easier to access. One way to organize a large amount of numerical data is through the use of statistics. Statistics is the mathematical study of numerical data.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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When you have a large amount of information on a topic, it is helpful to organize or summarize the information so that it is easier to access. One way to organize a large amount of numerical data is through the use of statistics. Statistics is the mathematical study of numerical data.
Remember that information is always about something. When you deal with statistical numbers, the numbers always represent some sort of measurement: numbers of objects, weights of suitcases, levels of sodium, pitch ranges in Italian opera, and so on.
These summaries of statistical information can be used in two ways: to generalize about observed facts and to draw conclusions about unobserved facts based on observed samples. The first activity is called descriptive statistics ; the second, argumentative statistics. You use the first when you want to summarize information gleaned from observations. You use the second when you want to extrapolate from those generalizations to make predictions about unobserved things of the same sort as the observed ones.
Transcribed Image Text:Indicate whether the following scenarios involve descriptive statistics or argumentative statistics.
The EPA tested lead levels in all the wells in Woverton County and declared that the well water there is undrinkable because it contains
unacceptable amounts of the metal.
This scenario
does
involve drawing a conclusion about unobserved things based on an observed sample.
This is an example of
statistics.
When Professor Primavera listed all the scores on the last logic exam, he discovered that the majority of his students scored 80 points
or more.
This scenario
does
involve drawing a conclusion about unobserved things based on an observed sample.
This is an example of
statistics.
In all the 20-person focus groups, 10 to 13 of the participants rated Daz higher than Zap, so the company decided that its product will
sell well.
This scenario
involve drawing a conclusion about unobserved things based on an observed sample.
This is an example of
statistics.
Transcribed Image Text:The IRS recently announced that of the people filing federal income tax returns the previous year, a mere 1 percent earned 21 percent
of all the income reported.
This scenario
involve drawing a conclusion about unobserved things based on an observed sample.
This is an example of
statistics.
The campus police department released data for property crimes over the previous five years and announced that reported bicycle thefts
were reduced by half over that period of time.
This scenario
involve drawing a conclusion about unobserved things based on an observed sample.
This is an example of
statistics.
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