Tough+Math+Exercise

=The Tough Math Exercise= OK, we have not done this before, but here we go. In your teams, pick the most difficult question from each of the Exercises at the end of Chapter 6, 7, and 8. Then post your responses in the course wiki.
 * Due: BCC**

//Question 11: Name a variable you might study for which you think the standard deviation would be the appropriate measure of variability to compute. Explain your choice.// A variable that could use a standard deviation to measure the variability would be the height of a group of people in a study. A low standard deviation would indicate that there is not much variability among the height of the group of people. A higher standard deviation would indicate that there is more variability among the group. The mean height would be calculated upon which the deviation from the mean and the standard deviation could be computed. This would give outsiders a better picture of the variance in height among the group.
 * Chapter 6**

//Question 10: In the question 6, you were asked to compute the interquartile range for the data in question 2. Is the interquartile range a better choice than the standard deviation for these data? Why? Why not?// The interquartile is a better calculation for the data set than the standard deviation. The standard deviation is a good choice if the data is not highly skewed and if the data is of an equal interval. The data presented in question 2 is skewed, therefore the interquartile calculation is more appropriate.
 * Chapter 7**

//Question 8: The last emotional health score on page 1 of this book is 34. Explain how you would interpret this score. (keep in mind that the scores are McCall's **T** scores that are based on the perofrmance of a national norm group)// Answer: Since the score is 50, one standard deviation below the mean is 35. The score of 34 puts the adolescent's slightly more than one standard deviation below the mean. He is considered below the average mean.
 * Chapter 8**