Statistics Exam 1
Chapters 1–5 | Study
Guide, Practice Questions
& Exam Review
|Guaranteed success|
,Chapter 1: A characteristic of interest for the elements.
What is a variable?
Chapter 1: A set of measurements obtained for one particular
What is an observation? element.
Chapter 1: n observations.
If a data set has n elements, how
many observations does it have?
Chapter 1: Number of elements x number of variables
How do you find the total number of
data values in a complete data set?
Chapter 1: Labels or names used to identify an attribute of an
What is nominal scale data? element
Chapter 1: Yes. Numbers can be used as labels or codes
Can nominal data use numbers? without representing an amount.
Chapter 1: Data that can be ranked or placed in a meaningful
What is ordinal scale data? order.
Chapter 1: The rank or order is meaningful.
What is important about ordinal data?
Chapter 1: Ordered data where the differences between values
What is interval scale data? are meaningful and measured in fixed units.
,Chapter 1: Numerical data with equal intervales and a
What is ratio scale data? meaningful zero.
Chapter 1: Ratio data has a true zero.
What makes ratio data different from
interval data?
Chapter 1: Qualitative data consisting of labels or categories.
What is categorical data?
Chapter 1: Yes, numbers can be used as category labels.
Can categorical data be numeric?
Chapter 1: Numerical data that tells how many or how much.
What is quantitative data?
Chapter 1: Yes.
Is quantitative data always numeric?
Chapter 1: Data collected at the same point in time.
What is cross sectional data?
Chapter 1: Data collected by observing something over time.
What is time series data?
Chapter 1: Researchers observe behavior without controlling
What is an observational study? or influencing variables.
, What is an experimental study? Researchers influence one or more variables to
determine their effect on other variables.
Chapter 1: Methods used to summarize and present data in an
What are descriptive statistics? easy-to-understand way.
Chapter 1: The set of all elements being studied.
What is a population?
Chapter 1: A subset of the population.
What is a sample?
Chapter 1: Using a sample to make estimates or conclusions
What is statistical inference? about a population.
Chapter 1: Collecting data from the entire population.
What is a census?
Chapter 1: Collecting data from a sample of the population.
What is a sample survey?
Chapter 1: The scientific process of transforming data into
What is analytics? insights for better decisions.
Chapter 1: Analytics that examines what happened in the past.
What is descriptive analytics?
Chapters 1–5 | Study
Guide, Practice Questions
& Exam Review
|Guaranteed success|
,Chapter 1: A characteristic of interest for the elements.
What is a variable?
Chapter 1: A set of measurements obtained for one particular
What is an observation? element.
Chapter 1: n observations.
If a data set has n elements, how
many observations does it have?
Chapter 1: Number of elements x number of variables
How do you find the total number of
data values in a complete data set?
Chapter 1: Labels or names used to identify an attribute of an
What is nominal scale data? element
Chapter 1: Yes. Numbers can be used as labels or codes
Can nominal data use numbers? without representing an amount.
Chapter 1: Data that can be ranked or placed in a meaningful
What is ordinal scale data? order.
Chapter 1: The rank or order is meaningful.
What is important about ordinal data?
Chapter 1: Ordered data where the differences between values
What is interval scale data? are meaningful and measured in fixed units.
,Chapter 1: Numerical data with equal intervales and a
What is ratio scale data? meaningful zero.
Chapter 1: Ratio data has a true zero.
What makes ratio data different from
interval data?
Chapter 1: Qualitative data consisting of labels or categories.
What is categorical data?
Chapter 1: Yes, numbers can be used as category labels.
Can categorical data be numeric?
Chapter 1: Numerical data that tells how many or how much.
What is quantitative data?
Chapter 1: Yes.
Is quantitative data always numeric?
Chapter 1: Data collected at the same point in time.
What is cross sectional data?
Chapter 1: Data collected by observing something over time.
What is time series data?
Chapter 1: Researchers observe behavior without controlling
What is an observational study? or influencing variables.
, What is an experimental study? Researchers influence one or more variables to
determine their effect on other variables.
Chapter 1: Methods used to summarize and present data in an
What are descriptive statistics? easy-to-understand way.
Chapter 1: The set of all elements being studied.
What is a population?
Chapter 1: A subset of the population.
What is a sample?
Chapter 1: Using a sample to make estimates or conclusions
What is statistical inference? about a population.
Chapter 1: Collecting data from the entire population.
What is a census?
Chapter 1: Collecting data from a sample of the population.
What is a sample survey?
Chapter 1: The scientific process of transforming data into
What is analytics? insights for better decisions.
Chapter 1: Analytics that examines what happened in the past.
What is descriptive analytics?
