The New York Times reported that Apple has unveiled a new iPad marketed specifically to school districts for use by students. The 9.7-inch iPads will have faster processors and a cheaper price point in an effort to take market share away from Google Chromebooks in public school districts. Suppose that the following data represent the percentages of students currently using Apple iPads for a sample of 18 U.S. public school districts. (Round your answers to two decimal places.) 15 22 12 21 26 18 42 29 64 20 15 22 18 24 27 24 26 19 (a) Compute the mean and median percentage of students currently using Apple iPads. 24.67 mean median 22 (b) Compute the first and third quartiles (as percentages) for these data. 18 % Q3 26 X % (c) Compute the range and interquartile range (as percentages) for these data. range 52 % interquartile range x % (d) Compute the variance and standard deviation (as a percentage) for these data. variance 140.82 standard deviation 11.87

The New York Times reported that Apple has unveiled a new iPad marketed specifically to school districts for use by students. The 9.7-inch iPads will have faster processors and a cheaper price point in an effort to take market share away from Google Chromebooks in public school districts. Suppose that the following data represent the percentages of students currently using Apple iPads for a sample of 18 U.S. public school districts. (Round your answers to two decimal places.) 15 22 12 21 26 18 42 29 64 20 15 22 18 24 27 24 26 19 (a) Compute the mean and median percentage of students currently using Apple iPads. 24.67 mean median 22 (b) Compute the first and third quartiles (as percentages) for these data. 18 % Q3 26 X % (c) Compute the range and interquartile range (as percentages) for these data. range 52 % interquartile range x % (d) Compute the variance and standard deviation (as a percentage) for these data. variance 140.82 standard deviation 11.87

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

The New York Times reported that Apple has unveiled a new iPad marketed specifically to school districts for use by students.t The 9.7-inch iPads will have faster processors and a cheaper
price point in an effort to take market share away from Google Chromebooks in public school districts. Suppose that the following data represent the percentages of students currently using
Apple iPads for a sample of 18 U.S. public school districts. (Round your answers to two decimal places.)
15
22 12
21
26
18
42
29
64
20
15
22
18
24
27
24
26
19
(a) Compute the mean and median percentage of students currently using Apple iPads.
24.67
%
mean
median
22
%
(b) Compute the first and third quartiles (as percentages) for these data.
18
%
Q3
26
X %
(c) Compute the range and interquartile range (as percentages) for these data.
range
52
%
interquartile range
8
(d) Compute the variance and standard deviation (as a percentage) for these data.
variance
140.82
standard deviation
11.87

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