Statistics Chapter 1 2025/2026 Exam
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100% Correct Answers
Parameter - 🧠 ANSWER ✔✔A numerical measurement describing some
characteristic of a population
Statistic - 🧠 ANSWER ✔✔A numerical measurement describing some
characteristic of a sample.
Quantitative Data - 🧠 ANSWER ✔✔Consists of numbers representing
counts or measurements.
Qualitative (or categorical/attribute) Data - 🧠 ANSWER ✔✔Can be
separated into different categories that are distinguished by some non-
numerical characteristic.
,Example:
Marital Status
Are you registered to vote?
Eye Color
(Defined categories or groups)
Discrete Data - 🧠 ANSWER ✔✔Results when the number of possible
values is either a finite number or a "countable" number. (That is, the
number of possible values is 0, 1, or 2, and so on)
Example:
In a classroom of 30 children ages range from 9-11.
What is the discrete data in this situation?
When there is a specific, whole number of something that is discrete.
Therefore the amount of children (30) is the discrete data.
,Continuous (numerical) data - 🧠 ANSWER ✔✔Result from infinitely many
possible values that correspond to some continuous scale that covers a
range of values without gaps, interruptions, or jumps.
Example:
In a classroom of 30 children ages range from 9-11. What is the
Continuous data in this situation?
When there is a range of information it is Continuous. Therefore the age
range: 9 to 11 is the continuous data.
Levels of Measurement - 🧠 ANSWER ✔✔nominal, ordinal, interval, ratio
nominal level of measurement - 🧠 ANSWER ✔✔characterized by data that
consist of names, labels, or categories only, and the data cannot be
arranged in an ordering scheme (such as low to high)
Ordinal level of measurement - 🧠 ANSWER ✔✔Data are at the ordinal level
of measurement if they can be arranged in some order, but differences
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, (obtained by subtraction) between data values either cannot be determined
or are meaningless.
Example: Consumer reports magazine rates products as, "Best Buy",
"Recommended", and "Not Recommended". This is an ordinal level of
measurement because you can organize these ratings as most and least
recommended.
Interval level of measurement - 🧠 ANSWER ✔✔The interval level of
measurement is like the ordinal level, with the additional property that the
difference between any two data values is meaningful. However, data at
this level do not have a natural zero starting point (where none of the
quantity is present).
Ratio Level of Measurement - 🧠 ANSWER ✔✔The ratio level of
measurement is like the interval level with the additional property that there
is also a natural zero starting point (where zero indicates that none of the
quantity is present). For values at this level, differences and ratios are both
meaningful.
Questions and Detailed Answers | Get it
100% Correct Answers
Parameter - 🧠 ANSWER ✔✔A numerical measurement describing some
characteristic of a population
Statistic - 🧠 ANSWER ✔✔A numerical measurement describing some
characteristic of a sample.
Quantitative Data - 🧠 ANSWER ✔✔Consists of numbers representing
counts or measurements.
Qualitative (or categorical/attribute) Data - 🧠 ANSWER ✔✔Can be
separated into different categories that are distinguished by some non-
numerical characteristic.
,Example:
Marital Status
Are you registered to vote?
Eye Color
(Defined categories or groups)
Discrete Data - 🧠 ANSWER ✔✔Results when the number of possible
values is either a finite number or a "countable" number. (That is, the
number of possible values is 0, 1, or 2, and so on)
Example:
In a classroom of 30 children ages range from 9-11.
What is the discrete data in this situation?
When there is a specific, whole number of something that is discrete.
Therefore the amount of children (30) is the discrete data.
,Continuous (numerical) data - 🧠 ANSWER ✔✔Result from infinitely many
possible values that correspond to some continuous scale that covers a
range of values without gaps, interruptions, or jumps.
Example:
In a classroom of 30 children ages range from 9-11. What is the
Continuous data in this situation?
When there is a range of information it is Continuous. Therefore the age
range: 9 to 11 is the continuous data.
Levels of Measurement - 🧠 ANSWER ✔✔nominal, ordinal, interval, ratio
nominal level of measurement - 🧠 ANSWER ✔✔characterized by data that
consist of names, labels, or categories only, and the data cannot be
arranged in an ordering scheme (such as low to high)
Ordinal level of measurement - 🧠 ANSWER ✔✔Data are at the ordinal level
of measurement if they can be arranged in some order, but differences
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED 3
, (obtained by subtraction) between data values either cannot be determined
or are meaningless.
Example: Consumer reports magazine rates products as, "Best Buy",
"Recommended", and "Not Recommended". This is an ordinal level of
measurement because you can organize these ratings as most and least
recommended.
Interval level of measurement - 🧠 ANSWER ✔✔The interval level of
measurement is like the ordinal level, with the additional property that the
difference between any two data values is meaningful. However, data at
this level do not have a natural zero starting point (where none of the
quantity is present).
Ratio Level of Measurement - 🧠 ANSWER ✔✔The ratio level of
measurement is like the interval level with the additional property that there
is also a natural zero starting point (where zero indicates that none of the
quantity is present). For values at this level, differences and ratios are both
meaningful.
