Which of the following statement is correct and why?  a. The median id the mean trimmed 0% and the arithmetic mean is the mean trimmed 100%  b. A trimmmed mean is calculated by discarding the lower and higher 25% of the scores then diving the sum of the remaining scores by 2  c. Trimean is not a good measure of central tendency  d. One advantage of using trimimean is their resitance to extreme scores.

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Which of the following statement is correct and why? 

a. The median id the mean trimmed 0% and the arithmetic mean is the mean trimmed 100% 

b. A trimmmed mean is calculated by discarding the lower and higher 25% of the scores then diving the sum of the remaining scores by 2 

c. Trimean is not a good measure of central tendency 

d. One advantage of using trimimean is their resitance to extreme scores. 

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