Last updated: October 22, 2026 · Written by the Math Made Easy math teachers
This test checks mean, median, range, quartiles, IQR and mean absolute deviation. Order the data before finding a median or quartiles, show each calculation, and include units. The test is worth 20 points and should take 45 minutes.
Standards: 6.SP.A.3, 6.SP.B.5c, 6.SP.B.5d · Level: Grade 6
Question 1 Mean and median (2 points)
Find the mean and the median of 14, 9, 21, 12 and 24.
(1 point each)
Question 2 Median and range (2 points)
Find the median and the range of 31, 28, 35, 40, 26 and 36.
(1 point each)
Question 3 Mean and MAD from a dot plot (3 points)
The dot plot shows the songs 10 students downloaded.
- Find the mean. (1 point)
- Find the mean absolute deviation. (2 points)
Question 4 Quartiles (3 points)
Consider the values 12, 15, 17, 18, 22, 25, 27 and 30.
- Find the median. (1 point)
- Find Q1 and Q3. (1 point)
- Find the IQR. (1 point)
Question 5 Missing score (2 points)
The mean of four quiz scores is 84. Three of the scores are 80, 92 and 78. Find the fourth score.
Question 6 Adding an outlier (3 points)
The scores 70, 72, 75, 78 and 80 are joined by a new score of 15.
- Find the mean and the median before the new score. (1 point)
- Find the mean and the median after the new score. (1 point)
- Which measure changed more? (1 point)
Question 7 Choosing a measure (3 points)
Six employees at a shop earn $30,000, $32,000, $33,000, $35,000, $36,000 and $134,000.
- Find the mean salary. (1 point)
- Find the median salary. (1 point)
- Which measure better describes a typical salary? Explain. (1 point)
Question 8 Comparing two teams (2 points)
The box plots show points scored by two teams.
- Which team has the greater median? (1 point)
- Which team has the greater IQR? (1 point)
