1) Explain why the following statements are false: a) The value of every observation in a set of data is taken into account when calculating mean. b) The standard deviation is expressed without units. c) Quartiles and percentiles are different measures because they are calculated differently.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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COMMUNICATION
1) Explain why the following statements are false:
a) The value of every observation in a set of data is taken into account when calculating mean.
b) The standard deviation is expressed without units.
c) Quartiles and percentiles are different measures because they are calculated differently.
d) For grouped data, the measures of spread are just as accurate as with raw data.
f) The interquartile range includes the upper 25% and lower 25% of the data.
g) A z-score indicates how far the standard deviation lies from the mean.
Transcribed Image Text:COMMUNICATION 1) Explain why the following statements are false: a) The value of every observation in a set of data is taken into account when calculating mean. b) The standard deviation is expressed without units. c) Quartiles and percentiles are different measures because they are calculated differently. d) For grouped data, the measures of spread are just as accurate as with raw data. f) The interquartile range includes the upper 25% and lower 25% of the data. g) A z-score indicates how far the standard deviation lies from the mean.
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