Question: 19. For the following sample: 2, 8, 5, 9, 1, 6, 6, 3, 6, 10, 4, 12 a. Calculate the range, the semi-interquartile range, and

19. For the following sample: 2, 8, 5, 9, 1, 6, 6, 3, 6, 10, 4, 12

a. Calculate the range, the semi-interquartile range, and the standard deviation.

b. Add 2 points to every score, and then compute the range, the semi-interquartile range, and the standard deviation. How is variability affected when a con- stant is added to every score?

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