Question
The fish length captured by an ecologists are 15 21 30 38 48 52 74 106. The sample mean is 48.0 and the sample standard
The fish length captured by an ecologists are 15 21 30 38 48 52 74 106. The sample mean is 48.0 and the sample standard deviation is 30.0
How many observations are in the data set?
What is the median?
What is the range?
What is the third quartile?
What is the eighth decile?
What is the 62nd percentile?
What is the sample variance?
What are the units of measurement for the sample mean?
What are the units of measurement for the sample variance?
Suppose that the ichthyologist transforms the data by changing the units of measurement from centimeters to millimeters, i.e., each observation is multiplied by 10 .
What is the sample mean of the transformed observations?
What is the sample standard deviation of the transformed observations?
What is the sample variance of the transformed observations?
The sampler discovers that the device she has been using to measure the length of the fish was calibrated incorrectly, and it turns out that each length in the original sample is exactly 2.3 centimeters too long. To remedy this error, the ichthyologist must subtract 2.3 centimeters from each observation.
What is the sample mean of the corrected observations?
What is the standard deviation of the corrected observations?
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Introductory Real Analysis
Authors: A N Kolmogorov, S V Fomin, Richard A Silverman
1st Edition
0486134741, 9780486134741
