Posted by Diana on Wednesday, January 5, 2011 at 12:08am.
The names and ages for each person in a family of five follow:
Name Dick Jane Kirk Jean Scott
Age 40 36 8 6 2
a. What is the mean age?
b. Find the mean of the ages 5 yr from now.
c. Find the mean 10 yr from now.
d. Describe the relationships among the means found in
(a), (b), and (c).

math  drwls, Wednesday, January 5, 2011 at 9:13am
a. (40 + 36 + 8 + 6 + 2)/5 = ____
(It will not be an integer)
b. If everybody's age increases by 5, so does the average
c. Apply similar logic
d. If everybody's age increases by N, so does the average
Since we are dealing with a fractional average, the ages should have been given to the nearest tenth year. The computed average is probably low. A person who is "6" for example, could actually be 6.9 years old.
Answer This Question
Related Questions
 Math  "Jocelyn has 6 birds, their mean age is 10. The mode of their ages is 8. ...
 Math  The ages in years of the houses on Kelly’s block are 20, 26, 11, 2, 28, ...
 statistic  Let's assume there are 3 people in Room A and another 3 people in ...
 math  List the ages of two people in your life, one older than you and one ...
 Algebra II  Five years ago, Jane was 1/5 the age of her mother. Now she is 1/3 ...
 math  The range of the of the ages of the Glee club officers is 5. this means ...
 science computer  Write a program to read the names and age of 10 people and ...
 Math  Sheila's age is two years more than twice Nicole's age. The sum of their ...
 Statistics  z Score: When Reese Witherspoon won an Oscar as Best Actress for ...
 Math  A father's age is 3 times his son's age. Sum of their ages is 44 years. ...
More Related Questions