A newspaper article reported that a computer company has unveiled a new tablet computer marketed specifically to school districts for use by students. The new tablets will have faster processors and a cheaper price point in an effort to take market share away from a competing company in public school districts. Suppose that the following data represent the percentages of students currently using the company's tablets for a sample of 18 U.S. public school districts. (Round your answers to two decimal places.) 16 23 13 22 27 19 43 30 65 21 16 23 19 25 28 25 27 20 (a) Compute the mean and median percentage of students currently using the company's tablets. mean median (b) Compute the first and third quartiles (as percentages) for these data. Q₁₂ % % (c) Compute the range and interquartile range (as percentages) for these data. range interquartile range (d) Compute the variance and standard deviation (as a percentage) for these data. variance standard deviation % (e) Are there any outliers in these data? There ---Select--- ✓ below the lower limit and ---Select--- above the upper limit. (f) Based on your calculated values, what can we say about the percentage of students using the company's tablets in public school districts? O Use of the tablets is very low for all school districts. O Use of the tablets is very high for all school districts. O Relative to the mean, use of the tablets is similar for all school districts. O Relative to the mean, there are some school districts where much fewer students are using the tablets. O Relative to the mean, there are some school districts where many more students are using the tablets.
A newspaper article reported that a computer company has unveiled a new tablet computer marketed specifically to school districts for use by students. The new tablets will have faster processors and a cheaper price point in an effort to take market share away from a competing company in public school districts. Suppose that the following data represent the percentages of students currently using the company's tablets for a sample of 18 U.S. public school districts. (Round your answers to two decimal places.) 16 23 13 22 27 19 43 30 65 21 16 23 19 25 28 25 27 20 (a) Compute the mean and median percentage of students currently using the company's tablets. mean median (b) Compute the first and third quartiles (as percentages) for these data. Q₁₂ % % (c) Compute the range and interquartile range (as percentages) for these data. range interquartile range (d) Compute the variance and standard deviation (as a percentage) for these data. variance standard deviation % (e) Are there any outliers in these data? There ---Select--- ✓ below the lower limit and ---Select--- above the upper limit. (f) Based on your calculated values, what can we say about the percentage of students using the company's tablets in public school districts? O Use of the tablets is very low for all school districts. O Use of the tablets is very high for all school districts. O Relative to the mean, use of the tablets is similar for all school districts. O Relative to the mean, there are some school districts where much fewer students are using the tablets. O Relative to the mean, there are some school districts where many more students are using the tablets.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A newspaper article reported that a computer company has unveiled a new tablet computer marketed specifically to school districts for use by students. The new tablets will have faster processors
and a cheaper price point in an effort to take market share away from a competing company in public school districts. Suppose that the following data represent the percentages of students
currently using the company's tablets for a sample of 18 U.S. public school districts. (Round your answers to two decimal places.)
16 23 13 22 27 19 43 30 65 21 16 23 19 25 28
25 27 20
(a) Compute the mean and median percentage of students currently using the company's tablets.
mean
median
(b) Compute the first and third quartiles (as percentages) for these data.
Q₁₂
%
%
(c) Compute the range and interquartile range (as percentages) for these data.
range
interquartile range
(d) Compute the variance and standard deviation (as a percentage) for these data.
variance
standard deviation
%
(e) Are there any outliers in these data?
There ---Select--- ✓ below the lower limit and ---Select---
above the upper limit.
(f) Based on your calculated values, what can we say about the percentage of students using the company's tablets in public school districts?
Use of the tablets is very low for all school districts.
O Use of the tablets is very high for all school districts.
O Relative to the mean, use of the tablets is similar for all school districts.
O Relative to the mean, there are some school districts where much fewer students are using the tablets.
O Relative to the mean, there are some school districts where many more students are using the tablets.
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