EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED. FIRST PUBLISH OCTOBER 2024.
Math 120 Exam Study Guide with
Complete Solutions
Statistics - Answer✔✔-Is the science of collecting, organizing, summarizing, and analyzing
information to draw conclusions or answer questions
Population - Answer✔✔-The entire group to be studied is called
Ex: Taking a survey of the whole elementary school of their favorite ice cream
Sample - Answer✔✔-Is a subset of the population that is being studied
Ex: Out of the whole elementary school 50 students were chosen to participate in a survey
Descriptive Statistics - Answer✔✔-Consist of organizing and summarizing data. Describes data
through numerical summaries, tables, and graphs
Parameter - Answer✔✔-Is a numerical summary of a population
Ex: Suppose 48.2% of all students on your campus own a car. This is numerical summary of the
population
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, EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED. FIRST PUBLISH OCTOBER 2024.
Inferential Statistic - Answer✔✔-Use methods that take a result from a sample, extend it to the
population, and measure the reliability of the result
Ex: Rather than saying that 78% fo all students would return the money. We might say that
between 74% and 82% fo all students would return the money
Statistic - Answer✔✔-Is a numerical summary of a sample
Ex: Suppose a sample of 100 students is obtained , and from this sample we find that 46% own
a car
Explanatory variable - Answer✔✔-is one that explains changes in that variable.
Response variable - Answer✔✔-is the focus of a question in a study or experiment.
Qualitative variable - Answer✔✔-allow for classification of individuals based on some attribute
or characteristics
Quantitative variable - Answer✔✔-provide numerical measures of individuals
Discrete variable - Answer✔✔-is a quantitative variable that has either a finite number of
possible values or countable number of possible values. Cannot take on every possible value
between any two possible values
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Math 120 Exam Study Guide with
Complete Solutions
Statistics - Answer✔✔-Is the science of collecting, organizing, summarizing, and analyzing
information to draw conclusions or answer questions
Population - Answer✔✔-The entire group to be studied is called
Ex: Taking a survey of the whole elementary school of their favorite ice cream
Sample - Answer✔✔-Is a subset of the population that is being studied
Ex: Out of the whole elementary school 50 students were chosen to participate in a survey
Descriptive Statistics - Answer✔✔-Consist of organizing and summarizing data. Describes data
through numerical summaries, tables, and graphs
Parameter - Answer✔✔-Is a numerical summary of a population
Ex: Suppose 48.2% of all students on your campus own a car. This is numerical summary of the
population
Page 1/8
, EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED. FIRST PUBLISH OCTOBER 2024.
Inferential Statistic - Answer✔✔-Use methods that take a result from a sample, extend it to the
population, and measure the reliability of the result
Ex: Rather than saying that 78% fo all students would return the money. We might say that
between 74% and 82% fo all students would return the money
Statistic - Answer✔✔-Is a numerical summary of a sample
Ex: Suppose a sample of 100 students is obtained , and from this sample we find that 46% own
a car
Explanatory variable - Answer✔✔-is one that explains changes in that variable.
Response variable - Answer✔✔-is the focus of a question in a study or experiment.
Qualitative variable - Answer✔✔-allow for classification of individuals based on some attribute
or characteristics
Quantitative variable - Answer✔✔-provide numerical measures of individuals
Discrete variable - Answer✔✔-is a quantitative variable that has either a finite number of
possible values or countable number of possible values. Cannot take on every possible value
between any two possible values
Page 2/8
