Compare the mean, standard deviation, and variance for the data for the Cognitive Behavior condition in Exercise 5.21 with their 20% trimmed and Winsorized counterparts. Why is the Winsorized variance noticeably smaller than the usual variance?
Answer to relevant QuestionsUse LazStats or MYSTAT to reproduce the means, standard deviations, and other statistics in Exercise 5.19. (MYSTAT will give the most complete results. You will need to work out how to handle missing data, which are ...Given the data you created in Exercise 5.6, show that multiplying or dividing by a constant multiplies or divides the standard deviation by that constant. How does this relate to what happens to the mean under similar ...Unfortunately, the whole world is not built on the principle of a normal distribution. In the preceding exercise the real distribution is badly skewed because most children do not have language problems, and therefore ...Use any Internet search engine to find a program that will generate normally distributed data and plot them. Give one example each of an analytic, a relative frequency, and a subjective view of probability.
Post your question