Lesson 2.82.8 Small Group · Group 1
Group 1 · Set BSecond form · new problems, same idea
Learning target With my small group, 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 — one step at a time, with support.
Remember2.8 Small Group · Group 1
The mean is the fair share. Add all the values, then divide the total by how many values there are. The mean is the total shared equally. Add all the values. Then divide by how many values there are.
Words: Mean (Media)Average (Promedio)Measure of center (Medida de centro)Balance point (Punto de equilibrio)Data set (Conjunto de datos)
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1Complete each step, then write the final answer.
Lena read 5, 8, 6 and 9 pages on 4 days. What is the mean number of pages per day?
Show your workHint Add the values: 5 + 8 + 6 + 9. Then divide the total by 4.
Final answer: -
2Complete each step, then write the final answer.
Find the mean of 10, 14, 12, 16.
Show your workHint Add the four values. Then divide the total by 4.
Final answer: -
3Complete 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 workHint Add the growth for all 5 weeks. Then share the total equally.
Final answer: -
4Complete each step, then write the final answer.
Three bags of rice have a mean weight of 6 pounds. Two bags weigh 4 pounds and 5 pounds. How much does the third bag weigh?
Show your workHint If the fair share is 6 pounds for each of 3 bags, what is the total?
Final answer:
Explain your thinkingOmar said the mean was 28. Why is the total not the mean? Use the idea of a fair share.
Sentence starter The total is ___, but the mean is ___ because ___. · If every value were the same, each one would be ___.