19. The Los Angeles Times regularly reports the air quality index for various areas of South- ern California. A sample of air quality index values for Pomona provided the following data: 28, 42, 58, 48, 45, 55, 60, 49, and 50. a. Compute the range and interquartile range. b. Compute the sample variance and sample standard deviation. A sample of air quality index readings for Anaheim provided a sample mean of 48.5, a sample variance of 136, and a sample standard deviation of 11.66. What compari- sons can you make between the air quality in Pomona and that in Anaheim on the basis of these descrintive statistics? C.

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19. The Los Angeles Times regularly reports the air quality index for various areas of South-
ern California. A sample of air quality index values for Pomona provided the following
data: 28, 42, 58, 48, 45, 55, 60, 49, and 50.
Compute the range and interquartile range.
b. Compute the sample variance and sample standard deviation.
A sample of air quality index readings for Anaheim provided a sample mean of 48.5,
a sample variance of 136, and a sample standard deviation of 11.66. What compari-
sons can you make between the air quality in Pomona and that in Anaheim on the basis
of these descriptive statistics?
a.
C.
Transcribed Image Text:19. The Los Angeles Times regularly reports the air quality index for various areas of South- ern California. A sample of air quality index values for Pomona provided the following data: 28, 42, 58, 48, 45, 55, 60, 49, and 50. Compute the range and interquartile range. b. Compute the sample variance and sample standard deviation. A sample of air quality index readings for Anaheim provided a sample mean of 48.5, a sample variance of 136, and a sample standard deviation of 11.66. What compari- sons can you make between the air quality in Pomona and that in Anaheim on the basis of these descriptive statistics? a. C.
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