Unit 2 · Standard 6.DS.3
Describe Data by Range and Interquartile Range
My Notes Level 1 Support Level 2 Standard Level 3 Enrichment
Today's objectives
Content Objective: I can find the range and the interquartile range of a data set and use them to describe how spread out the data is.
Language Objective: I can explain what the spread of a data set is using the words range, quartile, interquartile range, and vary.
📖 See Learn It for the explanation and worked examples, and the Vocab tab for the words. These are your notes to fill in and keep.
✏️ Fill in each blank as we go. Use the Word Bank to help you.
👆 Tap any word to see its meaning and a picture.
Level 3: try the blanks from memory first, then check the bank.
- 1The range uses the values; the interquartile range uses the .
- 2Subtract the least value from the value to find the range.
- 3Numbers that split ordered data into four equal parts are .
- 4The spread of the middle half of the data, Q3 − Q1, is the .
- 5How spread out the numbers in a data set are is its .
- 6A single number describing how spread out a data set is is a .
Write About the Math
Which class scored better overall, and how do the range and the IQR show it?¿A qué clase le fue mejor en general, y cómo lo muestran el rango y el rango intercuartílico?
Say your answer to a partner first. Then write it, using at least two of these words:
Model: Equal medians do not make two data sets the same — you still need to know how spread out the scores are. — Students name a measure of spread rather than another measure of center.
Start
Complete the frames. Use the word bank.Completa las oraciones. Usa el banco de palabras.
- Class A's range is ___ and Class B's range is ___, so Class A's scores are more ___. Class A's IQR is ___ and Class B's IQR is ___, so the middle half of Class B is packed into a ___ stretch of points. Because 75% of Class B scored ___ or more, Class B did better ___.
- My answer is ___ because ___.Mi respuesta es ___ porque ___.
Build
Write two connected sentences. Use because, so, or but.Escribe dos oraciones conectadas. Usa porque, entonces o pero.
- My claim is ___.Mi afirmación es ___.
- My evidence is ___, so ___.Mi evidencia es ___, entonces ___.
Explain
Write a claim, give math evidence, and explain your reasoning.Escribe una afirmación, da evidencia matemática y explica tu razonamiento.