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.

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Question Help
Four siblings are 1, 3, 8, and 9 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.
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.
Vi
(,1)
More
Click to select your answer(s).
628
FEB
24
étv
W
...
Transcribed Image Text:This lést: 14 pts possiE Question Help Four siblings are 1, 3, 8, and 9 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. 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. Vi (,1) More Click to select your answer(s). 628 FEB 24 étv W ...
This Test: 14 pts possib
Question Help
Four siblings are 1, 3, 8, and 9 years of age. Complete parts (a) through (e) below.
O B.
The standara deviation will be smaller.
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.
O C. By adding 15 years to each age, the average value of the ages increases and the difference in the ages remains constant; so the mean increases by 15 and
the standard deviation remains constant.
O D. By adding 15 years to each age, the mean and the standard deviation remain the same, since the difference in the ages remains constant.
O E. By adding 15 years to each age, the average value of the ages decreases by 15. Because it decreases the mean, the difference between the mean and each
age is less significant, resulting in a decreased standard deviation.
Vi
(1,1)
More
Click to select your answer(s).
628
FEB
24
étv
W
Transcribed Image Text:This Test: 14 pts possib Question Help Four siblings are 1, 3, 8, and 9 years of age. Complete parts (a) through (e) below. O B. The standara deviation will be smaller. 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. O C. By adding 15 years to each age, the average value of the ages increases and the difference in the ages remains constant; so the mean increases by 15 and the standard deviation remains constant. O D. By adding 15 years to each age, the mean and the standard deviation remain the same, since the difference in the ages remains constant. O E. By adding 15 years to each age, the average value of the ages decreases by 15. Because it decreases the mean, the difference between the mean and each age is less significant, resulting in a decreased standard deviation. Vi (1,1) More Click to select your answer(s). 628 FEB 24 étv W
Expert Solution
Step 1

Given four siblings of ages 1, 3, 8, 9 years respectively.

Let mean =EX and standard deviation =SDX, we know that 

 EX+c=EX+c

And                   SDX+c=SDX

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