"Mean" Statistical Machine

 

Ron Zink

rzink@nhcs.k12.in.us

 

Grade: 6

Subject: Math

Topic: Mean, Median, Mode, & Range

Indiana Academic Standards: Math 6.6.3 & 6.6.4

ISTE Standards: II & III

 

Materials:  one pair of dice per student group, excel spreadsheet on a computer, and handout.

 

Description: Students will explore the ideas of mean, median, range, and mode. They will work with a data set to find these statistical values.  They will follow up by exploring probability.

 

Lesson:

  1. Give each student group a pair of dice.
  2. Discuss number sets.

·         Explain that a set is a collection of objects, such as any given group of numbers.

·         Give examples to the class.

  1. Each group should label cell A1 “Set 1”
  2. Have each student group roll one die nine times, recording the number rolled each time.  Enter the numbers in column A, beginning in cell A2.
  3. Find the sum of set 1 and fill it into cell A11.
  4. Divide the sum by 9 to fid the mean, or average.  Fill the mean into cell B11.
  5. Find the median and fill it into cell C11.
  6. Find the range of set 1 by subtracting the smallest number from the largest number. Fill the range into cell D11.
  7. Find the mode and fill it into cell E11.
  8. Repeat the process two more times creating “Set 2” and “Set 3.”
  9. Repeat the process to create “Set 4” using two dice.  Roll a set of ten numbers.
  10. Find the mean, median, range, and mode for Set 4.
  11. What patterns do you see? What relationship do you notice between the mean and median?

Follow Up:

Exploring probability

  1. Using two dice, find the probability of rolling doubles.
  2. Using two dice, find the probability of rolling a 2 followed by a 4.
  3. Using two dice, find the probability of rolling a 6 followed by a 1.
  4. Predict the probability of rolling a 3 followed by a 5.

 

“Mean” Statistical Machine Rubric

 

Name ____________________________

 

 

Was the statistical activity completed?

 

1          2          3          4          5

 

Were the sets labeled clearly?

 

1          2          3          4          5

 

Were the calculations figured correctly?

 

1          2          3          4          5

 

Was there an answer included for step 13?

 

1          2          3          4          5

 

Was the Follow-Up activity completed?

 

1          2          3          4          5

 

Were the probabilities correctly calculated?

 

1          2          3          4          5

 

Was a reasonable prediction made for question 4 of the follow-up activity?

 

1          2          3          4          5