A box plot is built from a median and the smallest and largest values, all placed on a number line. So you need to be warm at ordering numbers, finding the middle, subtracting to get the range, and reading a number line.
Answer these 3, then press Show my path. No grade — this just points you to the right level.
1. Order least to greatest: 6, 2, 9, 4. What is the smallest?
2. What is the range of 3, 7, 5 (biggest − smallest)?
3. On a number line, which point is between 4 and 8?
A box plot marks five points on a number line: the smallest value, the median (middle), the largest value, and the middles of each half. To find them you order the data and read positions on the line.
Your quick check picks one for you, but you can switch any time:
Level 0 Find the ends of the data.
A. Order: 5, 1, 3. What is the smallest value?
Ordered: 1, 3, 5. Smallest = 1.
B. From 5, 1, 3, what is the largest value?
Ordered: 1, 3, 5. Largest = 5.
C. Range = largest − smallest = 5 − 1 = ___
5 − 1 = 4.
Level 1 Order, find the middle, find the range.
A. Find the median of 7, 3, 5 (order, then middle).
Ordered: 3, 5, 7. Middle = 5.
B. What is the range of 3, 5, 7? (Largest − smallest.)
7 − 3 = 4.
C. On a number line, a box plot spans from 2 to 10. Which point is inside the box plot?
7 is between 2 and 10, so it's inside the span.
Level 2 Pull all the pieces from one data set.
A. Data: 4, 8, 2, 6, 10. After ordering, what is the median (middle of 5)?
Ordered: 2, 4, 6, 8, 10. The 3rd value (middle) is 6.
B. For 2, 4, 6, 8, 10, what is the range (largest − smallest)?
10 − 2 = 8.
1. What is the range of 5, 9, 2, 6? (Largest − smallest.)
Largest = 9, smallest = 2, so 9 − 2 = 7.
2. Find the median of 8, 4, 6 (order, then middle).
Ordered: 4, 6, 8. Middle = 6.
You've practiced exactly what Lesson 8-5 uses. Time to dive in.
Start Lesson 8-5 →