Grade 6 Mathematics · Unit 2: Understanding the World Around Us Through StatisticsStandard 6.DS.4

Lesson 2.8Reaching a Target Mean

Apply Day · Set BSecond form · new problems, same idea

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

Learning target I can determine the mean of a data set, use a target mean to find a missing value, and explain the mean as the fair share and the balance point of the data.

Remember2.8 · Part II

Measures of Center: Mean

  1. Add all data values together to find the total sum
  2. Divide the sum by the count of data values
  3. Concept: The mean represents the fair share or balance point of the data

Words: Mean (Media)Average (Promedio)Measure of center (Medida de centro)Balance point (Punto de equilibrio)Data set (Conjunto de datos)

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

    Find the mean of 4, 6, 8, 10, 12.

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

    Ruby earned $14, $22, $18 and $26 babysitting on 4 days. What is the mean amount per day?

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

    Dev wants a mean of 85 on 4 tests. His first 3 scores are 80, 88 and 79. What must he score on test 4?

    Show your work
    Final answer:
  4. 4Complete each step, then write the final answer.

    A plant grew 3 cm, 5 cm, 2 cm, 6 cm and 4 cm in 5 weeks. What is the mean growth per week?

    Show your work
    Final answer:
  5. 5Complete each step, then write the final answer.

    A runner wants a mean of 3.5 miles a day for 4 days. She ran 3, 4 and 2.5 miles. How far must she run on day 4?

    Show your work
    Final answer:
  6. 6Complete each step, then write the final answer.

    The mean of 6 numbers is 12. One number, 30, is removed. What is the mean of the other 5 numbers?

    Show your work
    Final answer:
  7. 7Circle the letter of the best answer. Show how you know.

    Find the mean of: 4, 6, 8, 10

    1. A6
    2. B7
    3. C8
    4. D28
    Put the data in order
    Work
  8. 8Circle the letter of the best answer. Show how you know.

    Miguel earned $60 walking dogs over 4 days. What is his mean daily earning?

    1. A$4
    2. B$15
    3. C$20
    4. D$60
    Show your work
  9. 9Circle the letter of the best answer. Show how you know.

    Find the mean of: 3, 5, 7, 9, 11

    1. A5
    2. B7
    3. C9
    4. D35
    Put the data in order
    Work
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