26. The acidity or alkalinity of a solution is measured using pH. A pH less than 7 is acidic; a pH greater than 7 is alkaline. The following data below represent the pH in samples of bottled water and tap water. Tap Mean: Tap Median: 7.64 7.45 7.47 7.50 7.68 7.45 7.10 7.56 7.47 7.52 5.09 5.26 5.20 5.02 5.26 5.13 5.26 5.21 a) Use your calculator to determine the mean and median pH for each type of water. State answer to two decimal places. Bottled 5.15 5.28 Bottled Mean: Median: 7.69 7.47 5.23 5.24 b) Suppose that a pH of 7.10 in tap water was incorrectly recorded as 1.70. How does this affect the mean? the median?
26. The acidity or alkalinity of a solution is measured using pH. A pH less than 7 is acidic; a pH greater than 7 is alkaline. The following data below represent the pH in samples of bottled water and tap water. Tap Mean: Tap Median: 7.64 7.45 7.47 7.50 7.68 7.45 7.10 7.56 7.47 7.52 5.09 5.26 5.20 5.02 5.26 5.13 5.26 5.21 a) Use your calculator to determine the mean and median pH for each type of water. State answer to two decimal places. Bottled 5.15 5.28 Bottled Mean: Median: 7.69 7.47 5.23 5.24 b) Suppose that a pH of 7.10 in tap water was incorrectly recorded as 1.70. How does this affect the mean? the median?
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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question 26
Transcribed Image Text:26. The acidity or alkalinity of a solution is measured using pH. A pH less than 7 is
acidic; a pH greater than 7 is alkaline. The following data below represent the
pH in samples of bottled water and tap water.
Tap
Mean:
Tap
a) Use your calculator to determine the mean and median pH for each type of water.
State answer to two decimal places.
Median:
Bottled
7.64 7.45 7.47 7.50 7.68 7.69
7.45
7.10
7.56 7.47 7.52
7.47
5.15
5.09 5.26
5.20
5.02
5.23
5.28 5.26 5.13 5.26 5.21 5.24
Bottled
Mean:
Median:
b) Suppose that a pH of 7.10 in tap water was incorrectly recorded as 1.70.
How does this affect the mean? the median?
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