Homework Help is Here – Start Your Trial Now!
Math
Statistics
24. Consider the four distributions shown here. Without calculating anything, which distribution do you think has the highest standard deviation? the lowest? a. b. Calculate s for each distribution.

24. Consider the four distributions shown here. Without calculating anything, which distribution do you think has the highest standard deviation? the lowest? a. b. Calculate s for each distribution.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

Questions 24 and 25

23. Consider these summaries of a data set: n = 50, x = 40, and s = 7.2. I'm considering adding one of the following pairs of values to the data set: 46 Chapter 2: Summarizing Data %3D С. %3D - 1 and - 2 30 and 50 29. Refe 38 and 42 40 and 40 0 and 80 a. Which pair(s) will increase s? Which pair(s) will decrease s? a. b. b. C. 24. Consider the four distributions shown here. 30. А Without calculating anything, which distribution do you think has the highest standard deviation? the lowest? a. b. Calculate s for each distribution. 25. Suppose that in a particular administration of the Scholastic Aptitude Test (SAT), the mean and standard deviation of the math scores were 515 and 116 respectively. IV 2 4 3 A score of 680 is at the 91st percentile for the math section. a. What does that mean? Calculate and interpret the z-score for a student who scores a 480 on the math section. The lowest and highest possible SAT math scores are 200 and 800. Are there any possible scores that would be considered outliers according to the z-score criterion? If so, identify them. d. The 25th and 75th percentiles are 440 and 600, respectively. Are there any possible scores that would be considered outliers according to the fences? If so, identify them. b. С. 26. Refer to question 25 about SAT math scores. The z-scores for three students' SAT math scores are: Charles: -0.99 Indie: 0.73 Francisco: 1.59 a. Which students scored above the mean? b. Find the SAT math coon0 8. . . . .
Transcribed Image Text:23. Consider these summaries of a data set: n = 50, x = 40, and s = 7.2. I'm considering adding one of the following pairs of values to the data set: 46 Chapter 2: Summarizing Data %3D С. %3D - 1 and - 2 30 and 50 29. Refe 38 and 42 40 and 40 0 and 80 a. Which pair(s) will increase s? Which pair(s) will decrease s? a. b. b. C. 24. Consider the four distributions shown here. 30. А Without calculating anything, which distribution do you think has the highest standard deviation? the lowest? a. b. Calculate s for each distribution. 25. Suppose that in a particular administration of the Scholastic Aptitude Test (SAT), the mean and standard deviation of the math scores were 515 and 116 respectively. IV 2 4 3 A score of 680 is at the 91st percentile for the math section. a. What does that mean? Calculate and interpret the z-score for a student who scores a 480 on the math section. The lowest and highest possible SAT math scores are 200 and 800. Are there any possible scores that would be considered outliers according to the z-score criterion? If so, identify them. d. The 25th and 75th percentiles are 440 and 600, respectively. Are there any possible scores that would be considered outliers according to the fences? If so, identify them. b. С. 26. Refer to question 25 about SAT math scores. The z-scores for three students' SAT math scores are: Charles: -0.99 Indie: 0.73 Francisco: 1.59 a. Which students scored above the mean? b. Find the SAT math coon0 8. . . . .
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 6 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
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 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…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
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
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS