An economist gathers a random sample of 500 observations, and loses the records of the last 180.
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Question:
An economist gathers a random sample of 500 observations, and loses the records of the last 180. This leaves only 320 observations from which to calculate the sample mean. What is the efficiency of this, relative to what could have been obtained from the whole sample?
What is the efficiency of the sample median relative to the sample mean in estimating the center of a normal population?
Related Book For
Elementary Statistics
ISBN: 978-0538733502
11th edition
Authors: Robert R. Johnson, Patricia J. Kuby
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