Nominal Ordinal Interval Ratio Quiz
Questions: 16 · 10 minutes
1. Which comparison is justified for ratio data but generally not for interval data?
One value is higher than another
Two values differ by 10 units
Three observations can be arranged from lowest to highest
A 20-kilogram object is twice as heavy as a 10-kilogram object
2. An exam uses scaled scores designed so that equal 10-point differences represent equal changes in performance, but a score of zero does not mean complete absence of the measured ability. Which level best fits the scores?
Nominal
Ordinal
Interval
Ratio
3. A medical form records a participant's blood group as A, B, AB, or O. What is the level of measurement?
Ratio, because four distinct values are available
Nominal, because the groups are distinct categories without an inherent ranking
Ordinal, because the groups can be listed in sequence
Interval, because each category has a standard name
4. A sports database records each player's jersey number. The numbers identify players but do not represent quantity or rank. What is the level of measurement?
Ordinal, because the numbers can be arranged from smallest to largest
Interval, because consecutive numbers differ by one
Nominal, because the numbers function as labels
Ratio, because a jersey can display zero
5. Survey respondents rate a service as poor, fair, good, or excellent. What is the level of measurement?
Nominal, because the responses are words
Ordinal, because the choices are ordered but their gaps are not known to be equal
Interval, because there are four response choices
Ratio, because excellent represents the greatest amount of satisfaction
6. Which level of measurement groups observations into categories without placing those categories in an inherent order?
Ordinal
Nominal
Interval
Ratio
7. A race organizer records finishing places as first, second, third, and fourth. Why are these data ordinal rather than interval?
The numerical differences between positions measure equal time gaps
The positions are names with no meaningful order
First place represents a meaningful absolute zero
The positions show order, but the performance gaps between positions need not be equal
8. What feature distinguishes ratio data from interval data?
Ratio data must be recorded using whole numbers
Ratio data can only describe physical objects
Ratio data have a meaningful zero that supports ratio comparisons
Ratio data have categories in a meaningful order
9. A laboratory records the elapsed duration of each trial in seconds, where zero seconds means no time elapsed. What is the level of measurement?
Ratio
Interval
Ordinal
Nominal
10. Which description best defines interval data?
Categories that have no inherent order
Ordered values with equal intervals but no meaningful absolute zero
Ordered categories whose gaps cannot be compared
Values with equal intervals and a meaningful absolute zero
11. A researcher has ordered satisfaction responses but cannot assume that the gap between each response category is equal. Which summary uses the ordering without requiring equal intervals?
Median
Arithmetic mean
Standard deviation
Variance
12. Which level of measurement provides an order or rank but does not require equal gaps between successive values?
Nominal
Ratio
Interval
Ordinal
13. Celsius temperatures are converted to Fahrenheit using F = 1.8C + 32. Why do Fahrenheit readings remain interval data?
The conversion preserves equal differences even though it shifts the zero point
The conversion creates an absolute zero at 32°F
The conversion turns temperatures into ordered categories
The conversion makes ratio statements such as 80°F being twice 40°F valid
14. A researcher records outdoor temperatures in degrees Celsius. Which level best describes these measurements?
Nominal, because temperature readings can be labeled
Ordinal, because warmer readings rank above colder ones
Ratio, because 20°C is twice 10°C
Interval, because equal differences are meaningful but 0°C is not an absence of temperature
15. A historical timeline records years relative to a conventionally chosen reference point. Equal year differences are meaningful, but saying year 2000 is twice year 1000 is not. Which level applies?
Interval, because differences are meaningful but the reference zero is arbitrary
Ordinal, because years can only be ranked
Ratio, because years are expressed numerically
Nominal, because each year can serve as a label
16. A travel study records trip distance in kilometers, where zero means no distance traveled. Statements such as 10 kilometers being twice 5 kilometers are meaningful. What is the level of measurement?
Nominal
Ordinal
Ratio
Interval