STATISTICS - 1.1 INTRODUCTION TO THE PRACTICE
OF STATISTICS.
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Population - Answer: The entire group of individuals to be studied is called the
population. An individual is a person or object that is a member of the population being
studied.
A polling organization contacts 1294 teenagers who are 16 to 19 years of age and live
in North America and asks whether or not they had driven a car on a highway recently.
What is the population in the study? - Answer: Teenagers who are 16 to 19 years of
age and live in North America.
A polling organization contacts 1294 teenagers who are 16 to 19 years of age and live
in North America and asks whether or not they had driven a car on a highway recently.
What is the sample in the study? - Answer: The 1294 teenagers who are 16 to 19 years
of age and live in North America.
A quality-control manager randomly selects 60 bottles of soda that were filled on June
14 to assess the calibration of the filling machine.
What is the population in the study? - Answer: Bottles of soda produced in the plant on
June 14.
A quality-control manager randomly selects 60 bottles of soda that were filled on June
14 to assess the calibration of the filling machine.
What is the sample in the study? - Answer: The 60 bottles of soda selected in the plant
on June 14.
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, Descriptive - Answer: Descriptive statistics consists of organizing and summarizing
information collected.
Inferential - Answer: Inferential statistics uses methods that generalize results obtained
from a sample to the population and measure the reliability of the results.
Statistic - Answer: Is a numerical summary of a sample, which is a subset of the
population that is being studied.
Statistics is the science of collecting, organizing, summarizing, and analyzing
information to draw a conclusion and answer questions. In addition, statistics is about
providing a measure of confidence in any conclusions.
Parameter - Answer: Is a numerical summary of population, which is an entire group to
be studied.
Variables - Answer: Are the characteristics of the individuals within the population. If
variables did not vary, they would be constants, and statistical inference would not be
necessary.
Determine whether the underlined value is a parameter or a statistic.
Following the election, 18 % of the governors of all 50 areas of a country were female.
Is the value a parameter or a statistic? - Answer: The value is a parameter because the
governors of all 50 area of a country are a population.
Determine whether the underlined value is a parameter or a statistic.
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
OF STATISTICS.
Quality content you can rely on!
Population - Answer: The entire group of individuals to be studied is called the
population. An individual is a person or object that is a member of the population being
studied.
A polling organization contacts 1294 teenagers who are 16 to 19 years of age and live
in North America and asks whether or not they had driven a car on a highway recently.
What is the population in the study? - Answer: Teenagers who are 16 to 19 years of
age and live in North America.
A polling organization contacts 1294 teenagers who are 16 to 19 years of age and live
in North America and asks whether or not they had driven a car on a highway recently.
What is the sample in the study? - Answer: The 1294 teenagers who are 16 to 19 years
of age and live in North America.
A quality-control manager randomly selects 60 bottles of soda that were filled on June
14 to assess the calibration of the filling machine.
What is the population in the study? - Answer: Bottles of soda produced in the plant on
June 14.
A quality-control manager randomly selects 60 bottles of soda that were filled on June
14 to assess the calibration of the filling machine.
What is the sample in the study? - Answer: The 60 bottles of soda selected in the plant
on June 14.
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, Descriptive - Answer: Descriptive statistics consists of organizing and summarizing
information collected.
Inferential - Answer: Inferential statistics uses methods that generalize results obtained
from a sample to the population and measure the reliability of the results.
Statistic - Answer: Is a numerical summary of a sample, which is a subset of the
population that is being studied.
Statistics is the science of collecting, organizing, summarizing, and analyzing
information to draw a conclusion and answer questions. In addition, statistics is about
providing a measure of confidence in any conclusions.
Parameter - Answer: Is a numerical summary of population, which is an entire group to
be studied.
Variables - Answer: Are the characteristics of the individuals within the population. If
variables did not vary, they would be constants, and statistical inference would not be
necessary.
Determine whether the underlined value is a parameter or a statistic.
Following the election, 18 % of the governors of all 50 areas of a country were female.
Is the value a parameter or a statistic? - Answer: The value is a parameter because the
governors of all 50 area of a country are a population.
Determine whether the underlined value is a parameter or a statistic.
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
