Last updated: October 22, 2026 · Written by the Math Made Easy math teachers
Looking for a comparing two populations quiz? Then this Grade 7 quiz on Comparing Two Data Sets with Variability asks 10 multiple-choice questions with instant feedback. This quiz has 10 multiple-choice questions on means, MAD, IQR and the difference of centers expressed in MADs. Wrong options come from mistakes such as using the range as the IQR or multiplying instead of dividing.
Standards: 7.SP.B.3, 7.SP.B.4 · Level: Grade 7
What this Comparing Two Data Sets with Variability quiz checks
- Mean pairs with MAD; median pairs with IQR.
- MAD = the average distance from the mean.
- IQR = Q3 − Q1, the width of the box.
- Gap in MADs = difference of centers ÷ MAD.
- A gap of 3 or more MADs is a large difference.
The 10 questions of the quiz
- What is the mean of 8, 11, 14 and 7?
- What is the mean absolute deviation of 2, 4, 6 and 8?
- How wide is the box in this plot, in points?
- Two groups have means of 25 and 31, and each has a MAD of 3. The difference of the means is how many MADs?
- Which measure of variability is usually paired with the median?
- The two dot plots have the same shape and a MAD of 0.8. The difference of the means is how many times the MAD?
- Two box plots both have an IQR of 12. One median is 40 and the other is 52. The medians differ by how many IQRs?
- What is the range of 7, 19, 11, 3 and 15?
- Two data sets have means that differ by much less than one MAD. What does this suggest?
- Class A has a mean of 82 and Class B has a mean of 70. Each has a MAD of 4. The mean of Class A is how many MADs above the mean of Class B?
After the quiz
Missed a question? Reread the Comparing Two Data Sets with Variability lesson, then take the quiz again. Next, solve the Grade 7 worksheet on Comparing Two Data Sets with Variability, one star first, then two and three stars. Finally, take the chapter test under real conditions, without notes and with a timer.