Question Help ▼ Four siblings are 1, 3, 8, and 9 o years of age. Complete parts (a) through (e) below. (Round to the nearest tenth as needed.) d. Without doing any calculation, indicate whether the standard deviation of the ages in 15 years will be larger, smaller, or the same as the standard deviation of their current ages. Choose the correct answer below. O A. The standard deviation will be larger. O B. The standard deviation will be smaller. O C. The standard deviation will be the same. O D. The standard deviation cannot be approximated without calculations. Check your answer by calculating the standard deviation in 15 years. years (Round to the nearest tenth as needed.) e. Adding 15 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? Choose the correct answer below. O A. By adding 15 years to each age, the average value of the ages increases by 15. Because it increases the mean, each age is farther from the mean, resulting in an increased standard deviation. O B. By adding 15 years to each age, the average value of the ages decreases and the difference in the ages remains constant: so the mean decreases by 15 and the standard deviation remains constant.
Question Help ▼ Four siblings are 1, 3, 8, and 9 o years of age. Complete parts (a) through (e) below. (Round to the nearest tenth as needed.) d. Without doing any calculation, indicate whether the standard deviation of the ages in 15 years will be larger, smaller, or the same as the standard deviation of their current ages. Choose the correct answer below. O A. The standard deviation will be larger. O B. The standard deviation will be smaller. O C. The standard deviation will be the same. O D. The standard deviation cannot be approximated without calculations. Check your answer by calculating the standard deviation in 15 years. years (Round to the nearest tenth as needed.) e. Adding 15 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? Choose the correct answer below. O A. By adding 15 years to each age, the average value of the ages increases by 15. Because it increases the mean, each age is farther from the mean, resulting in an increased standard deviation. O B. By adding 15 years to each age, the average value of the ages decreases and the difference in the ages remains constant: so the mean decreases by 15 and the standard deviation remains constant.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question
Expert Solution
Step 1
Given four siblings of ages 1, 3, 8, 9 years respectively.
Let mean and standard deviation , we know that
And
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman