MATH 225N - STATISTICAL REASONING CHAPTER #1
2025 QUESTIONS WITH ANSWERS GRADED A+
Data - correct answers-consists of information coming from observations, counts, measurements, or
responses
Statistics - correct answers-The science of collecting, organizing, analyzing, and interpreting data in
order to make decisions
Population - correct answers-The collection of all outcomes, responses, measurements, or counts that
are of interest.
Sample - correct answers-A subset of the population
Parameter - correct answers-A number that describes a Population characteristic
Statistic - correct answers-A number that describes a Sample characteristic
Descriptive Statistics - correct answers-Involves organizing, summarizing, and displaying data. (Tables,
Charts, Averages)
Inferential Statistics - correct answers-Involves using a sample data to draw conclusions about a
population.
QuaLitative Data - correct answers-Consists of attributes, labels, or non-numerical entries
QuaNtative Data - correct answers-Numerical measurements or counts.
Nominal Data (Lowest) - correct answers-Qualitative only; Uses names, labels, or qualities; NO MATH
computations can be made at this level
Ordinal Data (2nd) - correct answers-Qualitative or Quantitative; Arranged in order or ranked;
Differences between data are not meaningful
Interval Data (3rd) - correct answers-Quantitative data ONLY; Can be ordered; Meaningful differences
between data can be calculated; Not an inherent Zero-Zero is just a position on a scale
Ratio Data (Highest) - correct answers-Quantitative data ONLY; Can be ordered; Meaningful differences
between data can be calculated; Iherent Zero-Zero means none, an absence of value
Discrete Data - correct answers-A random variable is discrete data if it has a finite or countable number
of possible outcomes that can be listed.
Continuous Data - correct answers-A random variable is continuous data if it has an uncountable
number of possible outcomes, represented by an interval on the number line.
Designing a Statistical Study - correct answers-1. Identify the variable(s) of interest (the focus) and the
population of the study.
2. Develop a detailed plan for collecting data. If you use a sample, make sure the sample is
representative of the population.
2025 QUESTIONS WITH ANSWERS GRADED A+
Data - correct answers-consists of information coming from observations, counts, measurements, or
responses
Statistics - correct answers-The science of collecting, organizing, analyzing, and interpreting data in
order to make decisions
Population - correct answers-The collection of all outcomes, responses, measurements, or counts that
are of interest.
Sample - correct answers-A subset of the population
Parameter - correct answers-A number that describes a Population characteristic
Statistic - correct answers-A number that describes a Sample characteristic
Descriptive Statistics - correct answers-Involves organizing, summarizing, and displaying data. (Tables,
Charts, Averages)
Inferential Statistics - correct answers-Involves using a sample data to draw conclusions about a
population.
QuaLitative Data - correct answers-Consists of attributes, labels, or non-numerical entries
QuaNtative Data - correct answers-Numerical measurements or counts.
Nominal Data (Lowest) - correct answers-Qualitative only; Uses names, labels, or qualities; NO MATH
computations can be made at this level
Ordinal Data (2nd) - correct answers-Qualitative or Quantitative; Arranged in order or ranked;
Differences between data are not meaningful
Interval Data (3rd) - correct answers-Quantitative data ONLY; Can be ordered; Meaningful differences
between data can be calculated; Not an inherent Zero-Zero is just a position on a scale
Ratio Data (Highest) - correct answers-Quantitative data ONLY; Can be ordered; Meaningful differences
between data can be calculated; Iherent Zero-Zero means none, an absence of value
Discrete Data - correct answers-A random variable is discrete data if it has a finite or countable number
of possible outcomes that can be listed.
Continuous Data - correct answers-A random variable is continuous data if it has an uncountable
number of possible outcomes, represented by an interval on the number line.
Designing a Statistical Study - correct answers-1. Identify the variable(s) of interest (the focus) and the
population of the study.
2. Develop a detailed plan for collecting data. If you use a sample, make sure the sample is
representative of the population.
