Statistic in kinesiology

1. How do you calculate the median? Can there be two medians? What if two medians are noted and they are the same number? 2. Why is the median alwavs at the 50th percentile? 3. How do you calculate the mode of a distribution? What if there happens to be two modes? 4. When might someone prefer mode over mean or median to describe a data set's central tendency?

5. We know that an average is one way of describing scores in a distribution ... but it is only half of the story. What else might be important to know in addition to the measure of central tendency? 6. There are several different types of variability discussed in the chapter. What are the three tvpes of variability that can be used to describe spread or dispersion? 7. How might you go about computing the range? What is the difference between an exclusive range and an inclusive range? 8. How would you compute the standard deviation for a given set of scores? Why is the standard deviation considered to be an unbiased estimate? 9. How do you calculate the variance of a set of scores? What do you notice about the formulas for variance and standard deviation? 10. How are the variance and the standard deviation similar to each other? How are they different?