measurement

 Which scale of measurement classifies data into categories without any order?

Nominal scale

 Which example best represents ordinal data?

Ranking movies from most to least favorite

Which characteristic distinguishes interval scales from ratio scales?

Interval scales lack a true zero but have equal units

Temperature in Fahrenheit is measured using which scale?

Interval scale

Which variable is measured on a ratio scale?

The number of followers on a social media account

 A researcher measures satisfaction on a 1–5 Likert scale. What measurement level is this?

Ordinal

What does the presence of a “true zero” allow researchers to calculate?

Meaningful ratios such as “twice as much”

Which statement describes a continuous variable?

A variable that can take any value within a range

Which measurement scale is most appropriate for classifying hair color?

Nominal

Why is the ratio scale considered the most informative measurement scale?

All measurement properties

How can you identify whether a variable should be measured using a nominal scale?

a variable should be measured using a nominal scale if it consists no inherent order or ranking. Typically used to only name and classify items

Why is it inappropriate to compute the mean for nominal data?

Nominal data have no numerical value or order, so averaging them has no meaning.

What is the key difference between interval and ratio scales

Interval scale has equal intervals between values but no true zero point and ratio scales have equal intervals between values and a true zero point

A researcher wants to measure “media engagement level.” What considerations determine the correct measurement scale?

A researcher should choose a scale based on whether media engagement is just categories, ranked, measured with equal intervals or has a true zero

Why are ordinal scales useful despite not having equal intervals?

Because they show the rank or order of items, allowing comparisons of which is higher or lower even if the exact differences between ranks remain unknown