Grade 6 Mathematics · Unit 2: Understanding the World Around Us Through StatisticsStandard 6.DS.6d

Lesson 2.102.10 Small Group · Group 2

Group 2 · Set BSecond challenge form · new problems, same idea

Mastery check☐ Exceeds☐ Meets target☐ Needs practice
Name Date Period

Learning target I can choose the best measure of center for a data set based on its shape, explain why the method works, and use it on a problem I have not seen before.

Remember2.10 Small Group · Group 2

Look at the shape first: with no outliers the mean fits, and with an outlier on either side the median shows a typical value better. An outlier can pull the mean up or down. The median stays close to most of the data.

Words: Mean (Media)Median (Mediana)Outlier (Valor atípico)Skewed (Sesgado)Data distribution (Distribución de datos)

  1. 1Complete each step, then write the final answer.

    A shop sells shirts for $12, $14, $13, $15, $12 and $60. Which measure better shows a typical price: the mean or the median?

    Show your work
    Final answer:
  2. 2Complete each step, then write the final answer.

    Which measure better shows a typical value for 40, 44, 42, 43, 41, 5: the mean or the median?

    Show your work
    Final answer:
  3. 3Complete each step, then write the final answer.

    Mo's trips to school took 15, 18, 16, 17, 14 and 60 minutes. The 60 was a snow day. Give the best typical time.

    Show your work
    Final answer:
  4. 4Circle the letter of the best answer. Show how you know.

    Six values have a mean of 20 and a median of 12. Does the data most likely have a high outlier, a low outlier, or no outlier?

    1. AA high outlier
    2. BA low outlier
    3. CNo outlier
    Show your work

Explain your thinkingCan an outlier pull the mean down as well as up? Use the muffin data and the platter data to explain.

How did it go? ☐ 4 · I can teach it☐ 3 · I've got it☐ 2 · I need a hint☐ 1 · I need help