MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
What is a sample
Expert Solution
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Step 1
Sample mean :
It is sum of all observation in the sample divided by total number of observations. It is denoted by " "
Sample mean is best point estimate of population mean ( )
Formula :
Example :
Let sample data , xi : 15, 10, 13, 18, 14
So, sample mean for this data is,
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- Explain why the mean and the median are useful sample statistics (i.e. what does it tell us about data?) When should use a mean versus median? Median versus mean?arrow_forwardWhat is the significance of the “normal” distribution? Please provide explanation/example.arrow_forwardIt is not important to collect samples randomly. True or falsearrow_forward
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