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.) 17 24 14 23 28 20 44 31 66 22 17 24 20 26 29 26 28 21 (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. Q1 ( )% Q3 ( )% (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 are 1. 0 values is 2. 1 value are 3. 2 values are 4. 3 values are 5. 4 values below the lower limit and 1. are 0 values 2. is 1 value 3. are 2 values 4. are 3 values 5. are 4 values 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? 1. Relative to the mean, use of the tablets is similar for all school districts. 2. Relative to the mean, there are some school districts where much fewer students are using the tablets. 3. Relative to the mean, there are some school districts where many more students are using the tablets. 4. Use of the tablets is very low for all school districts. 5. Use of the tablets is very high for all school districts

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Description: 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 s

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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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.)

17	24	14	23	28	20	44	31	66	22	17	24	20	26	29
26	28	21

(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.

Q₁ ( )% Q₃ ( )%

(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 are

1. 0 values is

2. 1 value are

3. 2 values are

4. 3 values are

5. 4 values

below the lower limit and

1. are 0 values

2. is 1 value

3. are 2 values

4. are 3 values

5. are 4 values

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?

1. Relative to the mean, use of the tablets is similar for all school districts.

2. Relative to the mean, there are some school districts where much fewer students are using the tablets.

3. Relative to the mean, there are some school districts where many more students are using the tablets.

4. Use of the tablets is very low for all school districts.

5. Use of the tablets is very high for all school districts.

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