MATH 1280 - Unit 1 Exam/ Questions with Certified Ans/ 2025.
Descriptive Statistics - (answers)Descriptive statistics consists of methods for organizing and
summarizing information. This includes the construction of graphs, charts, and tables and the
calculation of various descriptive measures such as averages, measures of variation, and
percentiles.
Population - (answers)The collection of all individuals or items under consideration in a
statistical study
Sample - (answers)That part of the population from which information is obtained
Inferential Statistics - (answers)Inferential statistics consists of methods for drawing and
measuring the reliability of conclusions about a population based on information obtained from a
sample of the population.
Observational study - (answers)A study where researches simply observe characteristics and take
measurements, as in a sample survey.
Designed experiment - (answers)A study where researchers impose treatments and controls and
then observe characteristics and take measurements.
Census - (answers)Obtaining information for the entire population of interest.
Representative sample - (answers)A sample that reflects as closely as possible the relevant
characteristics of the population under consideration.
Probability sampling - (answers)Where a random device such as tossing a coin, consulting a
table of random numbers, or employing a random number generator is used to decide which
members of the population will constitute the sample instead of leaving such decisions to human
judgment.
, Simple random sampling - (answers)A sampling procedure for which each possible sample of a
given size is equally likely to be the one obtained.
Simple random sample - (answers)A sample obtained by simple random sampling
Simple random sampling with replacement - (answers)Simple random sampling where a member
of the population can be selected more than once
Simple random sampling without replacement - (answers)Simple random sampling where a
member of the population can be selected at most once.
Variable - (answers)A characteristic that varies from one person or thing to another.
Qualitative variable - (answers)A non-numerically valued variable.
Quantitative variable - (answers)A numerically valued variable.
Discrete variable - (answers)A quantitative variable whose possible values can be listed.
Continuous variable - (answers)A quantitative variable whose possible values form some interval
of numbers.
Data - (answers)Values of a variable.
Qualitative Data - (answers)Values of a qualitative variable.
Quantitative Data - (answers)Values of a quantitative variable.
Discrete Data - (answers)Values of a discrete variable.
Descriptive Statistics - (answers)Descriptive statistics consists of methods for organizing and
summarizing information. This includes the construction of graphs, charts, and tables and the
calculation of various descriptive measures such as averages, measures of variation, and
percentiles.
Population - (answers)The collection of all individuals or items under consideration in a
statistical study
Sample - (answers)That part of the population from which information is obtained
Inferential Statistics - (answers)Inferential statistics consists of methods for drawing and
measuring the reliability of conclusions about a population based on information obtained from a
sample of the population.
Observational study - (answers)A study where researches simply observe characteristics and take
measurements, as in a sample survey.
Designed experiment - (answers)A study where researchers impose treatments and controls and
then observe characteristics and take measurements.
Census - (answers)Obtaining information for the entire population of interest.
Representative sample - (answers)A sample that reflects as closely as possible the relevant
characteristics of the population under consideration.
Probability sampling - (answers)Where a random device such as tossing a coin, consulting a
table of random numbers, or employing a random number generator is used to decide which
members of the population will constitute the sample instead of leaving such decisions to human
judgment.
, Simple random sampling - (answers)A sampling procedure for which each possible sample of a
given size is equally likely to be the one obtained.
Simple random sample - (answers)A sample obtained by simple random sampling
Simple random sampling with replacement - (answers)Simple random sampling where a member
of the population can be selected more than once
Simple random sampling without replacement - (answers)Simple random sampling where a
member of the population can be selected at most once.
Variable - (answers)A characteristic that varies from one person or thing to another.
Qualitative variable - (answers)A non-numerically valued variable.
Quantitative variable - (answers)A numerically valued variable.
Discrete variable - (answers)A quantitative variable whose possible values can be listed.
Continuous variable - (answers)A quantitative variable whose possible values form some interval
of numbers.
Data - (answers)Values of a variable.
Qualitative Data - (answers)Values of a qualitative variable.
Quantitative Data - (answers)Values of a quantitative variable.
Discrete Data - (answers)Values of a discrete variable.
