Concept explainers
Sibling Ages Four siblings are 2, 6, 9, and 10 years old.
a. Calculate the
b. Without doing any calculation, predict the mean of their ages 10 years from now. Check your prediction by calculating their mean age in 10 years (when they are 12, 16, 19, and 20 years old).
c. Calculate the standard deviation of their current ages. Round to the nearest tenth.
d. Without doing any calculation, predict the standard deviation of their ages 10 years from now. Check your prediction by calculating the standard deviation of their ages in 10 years.
e. Adding 10 years to each of the siblings ages had different effects on the mean and the standard deviation. Why did one of these values change while the other remained unchanged? How does adding the same value to each number in a data set affect the mean and standard deviation?
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
Introductory Statistics
Additional Math Textbook Solutions
Statistics: Informed Decisions Using Data (5th Edition)
Introductory Statistics
Elementary Statistics (13th Edition)
Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561
EBK STATISTICAL TECHNIQUES IN BUSINESS
Developmental Mathematics (9th Edition)
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin HarcourtHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL