Last updated: October 22, 2026 · Written by the Math Made Easy math teachers
Looking for a mean median IQR and MAD quiz? Then this Grade 6 quiz on Measuring Center and Variability in Data asks 10 multiple-choice questions with instant feedback.
Ten multiple-choice questions on mean, median, range, IQR and mean absolute deviation. Choose one answer for each, then read the explanation. Order the data first whenever a median is asked for.
Standards: 6.SP.A.3, 6.SP.B.5c, 6.SP.B.5d · Level: Grade 6
What this Measuring Center and Variability in Data quiz checks
- Mean = sum of values ÷ number of values; median = middle value of the ordered list.
- Range = maximum − minimum; IQR = Q3 − Q1.
- MAD is the average distance of the values from the mean.
- Outliers pull the mean and the range, but barely move the median and IQR.
- Use median with IQR for skewed data, and mean with MAD for symmetric data.
The 10 questions of the quiz
- What is the mean of 3, 5, 7 and 13?
- What is the median of 9, 3, 7, 12 and 5?
- What is the median of 4, 8, 10 and 20?
- What is the range of 14, 9, 22 and 17?
- The first quartile is 18 and the third quartile is 31. What is the interquartile range?
- How long is the box in this box plot, that is, what is the interquartile range?
- What is the mean absolute deviation of 10, 12, 18 and 20?
- Which measure is least affected by the value 30 in this data set?
- When are the median and the IQR the best choices?
- Two data sets have the same mean. Set A has MAD 1 and Set B has MAD 5. Which is more spread out?
After the quiz
Missed a question? Reread the Measuring Center and Variability in Data lesson, then take the quiz again. Next, solve the Grade 6 worksheet on Measuring Center and Variability in Data, one star first, then two and three stars. Finally, take the chapter test under real conditions, without notes and with a timer.