Module 5 quiz

Find the range for the following five salaries: $ 30,000, $ 45,000, $ 45,000, $ 45,000 and $200,000 A = $ 100,000 B = $ 170,000 C= $ 190,000 D = $ 200,000

B = $ 170,000

Find the standard deviation for the following particulates in air samples: 68,22 36,32, 42, 24, 28 and 38 A = 10 B = 12.5 C = 14.6 D = 18.2

C = 14.6

Find the median for the following five salaries: $ 30,000, $ 45,000, $ 45,000, $ 45,000 and $200,000 A = $40,000 B = $ 42,000 C= $ 45,000 D = $ 200,000

C= $ 45,000

Find the mean for the following five salaries: $ 30,000, $ 45,000, $ 45,000, $ 45,000 and $200,000 A = $40,000 B = $ 45,000 C= $ 73,000 D = $ 200,000

C= $ 73,000

The mean is not affected by outliers. True or False

False- The median and the mode are not generally affected by outliers.

The mode is a measure of spread True or False

False- The mode is a measure of central tendency or location

Attitude scores representing degree of satisfaction or confidence and preference rating scores is an example of a ratio variable. True or False

False- This is an example of an ordinal variable.

Duration of illness is an example of interval scale variable. True or False

False- This is an example of ratio-scale variable (page 2-4 of the textbook)

The median is a good descriptive measure, particularly for data that are skewed. True or False

True

A nominal-scale variable does not have numerical ranking. True or False

True- See page 2-4 of the textbook