Lesson 8

Spreading Out

Est. Class Sessions: 4–5

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

  1. 7 pages
  2. 10 pages
  3. Answers will vary. Some students may choose the mean since it includes 20 pages and 15 pages in the calculation. The higher number will “pull up” the average. Other students may choose the median since it is easy to calculate.

Y. Medians and Means

Students in Mr. Moreno's Language Arts class are reading a novel together. Their homework each night is to continue reading the book. Every Monday each student reports the number of pages he or she read the week before. Jackie's data is shown below.

  1. What is the median number of pages Jackie read?
  2. What is the mean number of pages Jackie read?
  3. Which average would you use to represent the data? Why?