Which of the following statements is CORRECT by Dr. Janet Forrester

Question 4 / 8: Which of the following statements is CORRECT concerning measures of central tendency and variability?

A Medians are not robust to outliers, while means are robust to outliers.

B Means and medians can never be negative.

C It is common to see the variance of a continuous variable displayed in journal articles along
with means, since the variance is a measure of dispersion in the original units measured.

D The median of the following data: 3, 5, 10, 11; is 7.5.

E The interquartile range is the difference between the 50th and 25th percentiles.

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Epidemiology Biostatistics Descriptive Statistics

Author:

Dr.Janet ForresterProfessor

Tufts University School of Medicine

USA

Access: Public Partially Instant Grading

Attribution: Janet, E.A. Forrester, Kwan Ho Kenneth Chui, Steven Cohen, Michael D. Kneeland, Alice Tang, David Tybor. Epidemiology and Biostatistics 2010. (Tufts University OpenCourseWare), http://ocw.tufts.edu/Course/65/ (Accessed 3 May, 2014). License: Creative Commons BY-NC-SA

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