Statistics Chapter 1-4 Exam 1 Questions and Answers Verified Solutions
Latest Update (2026/2027) Already Graded A+
Statistics - (answer)is the science of collecting, organizing, summarizing, and analyzing information
Data describes... - (answer)describes characteristics of an individual
Data - (answer)is a fact or proposition to draw a conclusion/ make a decison
Descriptive statistics - (answer)describes data through numerical summaries, tables and graphs
A statistic is a ... - (answer)numerical summary based on a sample
Inferential statistic - (answer)use methods that take results from a sample, extends them to the
population, and measures the reliability of the result
The process of Stats (4) - (answer)1. identify research/ objective
2. collect data
3. describe data
4. perform inference
Population - (answer)the entire group of individuals to be studied
Individual - (answer)the person or object that is a member of the population being studied
Sample - (answer)the subset of the population that is being tested
Parameter - (answer)a numerical summary of a population (information from entire group)
,Statistics Chapter 1-4 Exam 1 Questions and Answers Verified Solutions
Latest Update (2026/2027) Already Graded A+
Statistic - (answer)a numerical study of a sample (information from the subgroup)
Variables - (answer)the characteristics of the individuals within the population (can vary)
Qualitative variables - (answer)allow for classification of individuals based on some attribute or
characteristic
Example of qualitative - (answer)phone number, jersey numbers
Quantitative variable - (answer)provide numerical measures of individuals
ex/ height, shoe size, number of children, high school class rank, weight
Types of quantitative variables - (answer)discrete and continuous variable
ex/number of children, high school class rank, weight
Discrete variable - (answer)a variable that has a countable number of possible values. Such as 0, 1, 2, 3..
ex/ number of children, high school class rank
Continuous variable - (answer)variable that can be measured to any desire level of accuracy
ex/ household income in the previous year, weight
The list of observations a variable assumes is called _________ - (answer)data
, Statistics Chapter 1-4 Exam 1 Questions and Answers Verified Solutions
Latest Update (2026/2027) Already Graded A+
Nominal level of measurement - (answer)naming scheme. Does not allow values to be ranked in a
specific order
Ordinal level of measurement - (answer)has properties of the nominal leavel of measurement but can be
ranked in specific order
Interval level of measurement - (answer)Differences in the values of the variable have meaning.
A value of zero does NOT mean the absence of the quantity.
Addition and subtraction can be performed.
Ratio level of measurement - (answer)Ratio of the values have meaning.
A value of zero means the absence of the quantity.
Multiplication and division can be performed.
Time of day, temperature, dates and years are examples of ... (nominal, ordinal, interval, ratio) -
(answer)interval level measurement
Time, getting 0 hours of sleep, commute time are examples of... (nominal, ordinal, interval, ratio) -
(answer)ratio level of measurement
Are date of birth and body temperature are examples of interval, ratio, nominal or ordinal
measurements? - (answer)Interval level of measurements
Latest Update (2026/2027) Already Graded A+
Statistics - (answer)is the science of collecting, organizing, summarizing, and analyzing information
Data describes... - (answer)describes characteristics of an individual
Data - (answer)is a fact or proposition to draw a conclusion/ make a decison
Descriptive statistics - (answer)describes data through numerical summaries, tables and graphs
A statistic is a ... - (answer)numerical summary based on a sample
Inferential statistic - (answer)use methods that take results from a sample, extends them to the
population, and measures the reliability of the result
The process of Stats (4) - (answer)1. identify research/ objective
2. collect data
3. describe data
4. perform inference
Population - (answer)the entire group of individuals to be studied
Individual - (answer)the person or object that is a member of the population being studied
Sample - (answer)the subset of the population that is being tested
Parameter - (answer)a numerical summary of a population (information from entire group)
,Statistics Chapter 1-4 Exam 1 Questions and Answers Verified Solutions
Latest Update (2026/2027) Already Graded A+
Statistic - (answer)a numerical study of a sample (information from the subgroup)
Variables - (answer)the characteristics of the individuals within the population (can vary)
Qualitative variables - (answer)allow for classification of individuals based on some attribute or
characteristic
Example of qualitative - (answer)phone number, jersey numbers
Quantitative variable - (answer)provide numerical measures of individuals
ex/ height, shoe size, number of children, high school class rank, weight
Types of quantitative variables - (answer)discrete and continuous variable
ex/number of children, high school class rank, weight
Discrete variable - (answer)a variable that has a countable number of possible values. Such as 0, 1, 2, 3..
ex/ number of children, high school class rank
Continuous variable - (answer)variable that can be measured to any desire level of accuracy
ex/ household income in the previous year, weight
The list of observations a variable assumes is called _________ - (answer)data
, Statistics Chapter 1-4 Exam 1 Questions and Answers Verified Solutions
Latest Update (2026/2027) Already Graded A+
Nominal level of measurement - (answer)naming scheme. Does not allow values to be ranked in a
specific order
Ordinal level of measurement - (answer)has properties of the nominal leavel of measurement but can be
ranked in specific order
Interval level of measurement - (answer)Differences in the values of the variable have meaning.
A value of zero does NOT mean the absence of the quantity.
Addition and subtraction can be performed.
Ratio level of measurement - (answer)Ratio of the values have meaning.
A value of zero means the absence of the quantity.
Multiplication and division can be performed.
Time of day, temperature, dates and years are examples of ... (nominal, ordinal, interval, ratio) -
(answer)interval level measurement
Time, getting 0 hours of sleep, commute time are examples of... (nominal, ordinal, interval, ratio) -
(answer)ratio level of measurement
Are date of birth and body temperature are examples of interval, ratio, nominal or ordinal
measurements? - (answer)Interval level of measurements
